Condition presentation device and computer-readable storage medium

Abstract

This condition presentation device comprises: an acquisition unit which acquires molding conditions for injection molding in an injection molding machine; and a recommendation unit which recommends a change in the molding conditions by changing a display mode of display pertaining to the molding conditions on the basis of the molding conditions acquired by the acquisition unit and setting criteria of the molding conditions.

Description

Condition presentation device and computer-readable storage medium

[0001] The present disclosure relates to a condition presentation device and a computer-readable storage medium.

[0002] 2. Description of the Related Art Conventionally, there has been known a condition presentation device that uses an expert system to calculate and present optimal molding conditions for an injection molding machine (see, for example, Patent Document 1).

[0003] Japanese Patent Application Publication No. 63-209917

[0004] However, such a device calculates the optimal solution for multiple molding conditions that affect each other, which makes the device configuration complicated.

[0005] Therefore, there is a demand for a condition presentation device that has a simple configuration and is easy for operators to operate.

[0006] The condition presentation device includes an acquisition unit that acquires molding conditions for injection molding in an injection molding machine, and a recommendation unit that recommends a change in the molding conditions by changing the display mode of the display related to the molding conditions based on the molding conditions and setting criteria for the molding conditions acquired by the acquisition unit.

[0007] A computer-readable storage medium stores instructions that cause a computer to acquire molding conditions for injection molding in an injection molding machine, and recommend changes to the molding conditions by changing the display mode of the display related to the molding conditions based on the acquired molding conditions and setting criteria for the molding conditions.

[0008] According to one aspect of the present disclosure, it is possible to provide a condition presentation device that has a simple configuration and is easy for an operator to operate.

[0009] 1 is a block diagram showing an example of the hardware configuration of a condition presentation device. FIG. 2 is a block diagram showing an example of the functions of the condition presentation device. FIG. 3 is a diagram showing an example of a display screen that displays molding conditions. FIG. 4 is a diagram showing an example of molding data. FIG. 5 is a diagram showing an example of a display screen that recommends a change in molding conditions. FIG. 6 is a diagram showing an example of a display mode of setting items that are recommended to be changed. FIG. 7 is a flowchart showing an example of the flow of processing executed by the condition presentation device. FIG. 8 is a diagram showing an example of a display screen that presents recommended values ​​and recommended ranges. FIG. 9 is a diagram showing an example of a display mode of information that shows the reason for recommending a change in molding conditions. FIG. 10 is a block diagram showing an example of the functions of a condition presentation device that includes an input receiving unit. FIG. 11 is a diagram for explaining an example in which multiple criteria are set for one setting item. FIG. 12 is a block diagram showing an example of the functions of a condition presentation device that includes a selection receiving unit. FIG. 13 is a diagram for explaining an example in which a change in molding conditions is recommended in a different display mode for each setting criterion.

[0010] Below, a condition presentation device according to an embodiment of the present disclosure will be described with reference to the drawings. Note that not all combinations of features described in the following embodiments are necessarily required to solve the problem. Also, more detailed explanation than necessary may be omitted. Furthermore, the following description of the embodiments and the drawings are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the scope of the claims.

[0011] The condition presentation device is a device for presenting molding conditions for an injection molding machine. The molding conditions are the operating conditions under which the injection molding machine produces a molded product. These operating conditions include, for example, the maximum injection pressure and injection speed. Specific molding conditions will be explained in detail later.

[0012] The condition presentation device is implemented, for example, in a personal computer (PC) or a server. The condition presentation device may also be implemented in a numerical control device that controls an injection molding machine. An example in which the condition presentation device is implemented in a PC will be described below.

[0013] 1 is a block diagram showing an example of the hardware configuration of a condition presentation device 1. The condition presentation device 1 includes a hardware processor 11, a bus 12, a read-only memory (ROM) 13, a random access memory (RAM) 14, a non-volatile memory 15, a first interface 16, and a second interface 17.

[0014] The hardware processor 11 is a processor that controls the entire condition presentation device 1 in accordance with a system program. The hardware processor 11 reads the system program stored in the ROM 13 via the bus 12 and performs various processes based on the system program. The hardware processor 11 is, for example, a CPU (Central Processing Unit) or an electronic circuit.

[0015] The bus 12 is a communication path that connects the various pieces of hardware within the condition presentation device 1. The various pieces of hardware within the condition presentation device 1 exchange data via the bus 12.

[0016] The ROM 13 is a storage device that stores a system program for controlling the entire condition presentation device 1. The ROM 13 is a computer-readable storage medium.

[0017] The RAM 14 is a storage device that temporarily stores various data and functions as a work area for the hardware processor 11 to process various data.

[0018] The nonvolatile memory 15 is a storage device that retains data even when the condition presentation device 1 is turned off and no power is being supplied to the condition presentation device 1. The nonvolatile memory 15 stores, for example, molding conditions. The nonvolatile memory 15 is a computer-readable storage medium. The nonvolatile memory 15 is, for example, a battery-backed memory or a solid state drive (SSD).

[0019] The first interface 16 is a communication path connecting the bus 12 and the numerical control device 2. For example, the hardware processor 11 sends various data to the numerical control device 2 via the first interface 16. In addition, the numerical control device 2 sends various data to the condition presentation device 1 via the first interface 16.

[0020] The second interface 17 is a communication path connecting the bus 12 and the sensor 3. The sensor 3 is, for example, a sensor 3 that detects the pressure inside a mold of an injection molding machine. For example, the nonvolatile memory 15 receives and stores data sent from the sensor 3 via the second interface 17.

[0021] 2 is a block diagram showing an example of the functions of the condition presentation device 1. The condition presentation device 1 includes, for example, a molding condition storage unit 101, an acquisition unit 102, a setting criterion storage unit 103, and a recommendation unit 104. The acquisition unit 102 and the recommendation unit 104 are realized, for example, by the hardware processor 11 performing arithmetic processing using a system program stored in the ROM 13 and various data stored in the non-volatile memory 15. The molding condition storage unit 101 and the setting criterion storage unit 103 are realized, for example, by storing molding conditions and setting criterion input from an external device in the non-volatile memory 15.

[0022] The molding condition storage unit 101 stores molding conditions, which are conditions under which injection molding is performed in an injection molding machine.

[0023] The molding conditions include, for example, conditions related to injection, conditions related to pressure holding, and conditions related to weighing. Each of the conditions related to injection, conditions related to pressure holding, and conditions related to weighing includes a plurality of setting items.

[0024] The setting items for the injection conditions include the number of injection stages, the maximum injection pressure, the injection speed at each stage, and the switching position. The number of injection stages specifies how many stages the injection molding is divided into. The switching position specifies the position of the screw when switching between each stage of injection molding.

[0025] The setting items for the pressure-holding conditions include the number of stages of the pressure-holding operation, and the pressure and time at each stage. The number of stages of the pressure-holding operation is an item that specifies how many stages the pressure-holding operation should be divided into.

[0026] The setting items for the metering conditions include the number of metering operation stages, back pressure at each stage, rotation speed and switching position, cooling time, and pressure reduction setting. The number of metering operation stages specifies how many stages the metering operation should be divided into. The rotation speed and switching position are the rotation speed and position of the screw, respectively.

[0027] The condition presentation device 1 may, for example, acquire molding conditions from a mold file stored in association with the type of mold attached to the injection molding machine, and store the molding conditions in the molding condition storage unit 101. The condition presentation device 1 may, for example, accept molding conditions input from an operator, and store the molding conditions in the molding condition storage unit 101.

[0028] The acquisition unit 102 acquires molding conditions for injection molding in the injection molding machine. The acquisition unit 102 acquires the molding conditions stored in the molding condition storage unit 101. If the condition presentation device 1 does not include the molding condition storage unit 101, the acquisition unit 102 may directly acquire molding conditions input by an operator, for example.

[0029] 3 is a diagram showing an example of a display screen that displays molding conditions acquired by the acquisition unit 102. The display screen includes a display area 4 that displays conditions related to injection, a display area 5 that displays conditions related to pressure holding, and a display area 6 that displays conditions related to weighing.

[0030] The display area 4 showing the conditions related to injection includes an area 41 showing the number of stages of the injection operation, an area 42 showing the maximum injection pressure, an area 43 showing the injection speed at each stage, and an area 44 showing the switching position at each stage. In the example shown in Fig. 3, the number of stages of the injection operation is set to "1", the maximum injection pressure is set to "120" [MPa], and the injection speed at the first stage is set to "50" [mm / s].

[0031] The display area 5 showing the conditions related to pressure retention includes an area 51 showing the number of stages of the pressure retention operation, an area 52 showing the pressure at each stage, and an area 53 showing the time for each stage. In the example shown in Fig. 3, the number of stages of the pressure retention operation is set to "2", the pressure of the first stage of pressure retention is set to "100" [MPa] and "3" [seconds], the pressure of the second stage of pressure retention is set to "20" [MPa] and "3" [seconds], and the pressure of the pressure retention before metering is set to "20" [MPa] and "0.2" [seconds].

[0032] The area 6 showing the conditions related to metering includes an area 61 showing the number of stages of the metering operation, an area 62 showing the back pressure at each stage, an area 63 showing the rotation speed at each stage, an area 64 showing the switching position between each stage, an area 65 showing the cooling time during metering, and an area 66 showing the reduced pressure setting. In the example shown in Figure 3, the number of stages of the metering operation is "1", the back pressure during metering is "4" [MPa], and the rotation speed is "80" [min -1 ], cooling time is set to "20" [seconds], and pressure reduction setting is set to "2" [mm] and "2" [mm / s]. Now, returning to the explanation of FIG.

[0033] The setting standard storage unit 103 stores the setting standard of the molding conditions. The setting standard is an appropriate numerical value or an appropriate numerical range of the molding conditions, and is the standard when setting the molding conditions. The setting standard is determined based on the wisdom, experience, know-how, etc. of a skilled worker. In addition, the setting standard is set for each setting item of the molding conditions.

[0034] The setting criteria may be at least one of recommended values ​​of molding conditions and recommended ranges of molding conditions. The setting criteria may be at least one of a predetermined calculation formula and a predetermined conditional formula. The predetermined conditional formula is, for example, a conditional formula that uses molding data acquired when injection molding is performed. The molding data is, for example, waveform data, process data, and external sensor data.

[0035] The waveform data is time-series data acquired from the sensor 3 of the injection molding machine. The waveform data is, for example, time-series data indicating the pressure of the nozzle of the injection molding machine, or time-series data indicating the injection speed.

[0036] The process data is data showing representative values ​​of the waveform data or numerical data obtained through one molding cycle. The representative values ​​may be, for example, the average value, integrated value, maximum value, or minimum value of the time-series data shown by the waveform data. The process data is, for example, the maximum peak pressure of the nozzle, the cycle time, or the metering time.

[0037] The external sensor data is data acquired from a sensor 3 installed outside the injection molding machine. For example, the external sensor data is data acquired by a sensor 3 built into the mold.

[0038] The setting criteria may be determined using machine learning. For example, the setting criteria can be calculated using MLP (Multilayer Perceptron) or multiple regression analysis.

[0039] 4 is a diagram showing an example of molding data, which includes the maximum peak pressure, the cycle time, and the metering time.

[0040] In the conditions for dwelling pressure, it is desirable that the dwelling pressure of the nth stage be 40% or more and 60% or less of the dwelling pressure of the (n-1)th stage. Therefore, the setting standard storage unit 103 stores, for example, "0.4x≦y≦0.6x" as the setting standard for the dwelling pressure of the second stage, where "y" is the dwelling pressure of the second stage and "x" is the dwelling pressure of the first stage.

[0041] Furthermore, in the injection conditions, the maximum injection pressure must be equal to or greater than the maximum peak pressure acquired by the sensor 3. If the maximum injection pressure were the same as the maximum peak pressure, it would be assumed that the pressure during injection molding is limited by the maximum injection pressure. Therefore, the setting criterion storage unit 103 stores the conditional expression "maximum injection pressure>maximum peak pressure" as the setting criterion for the maximum injection pressure.

[0042] In addition, the recommended value for the distance for setting reduced pressure in the measurement conditions is 3 mm, so the setting standard storage unit 103 stores the value 3 mm as the setting standard for the distance for setting reduced pressure.

[0043] Furthermore, in the conditions related to the holding pressure, the value of the pressure before metering needs to be set to a value that ensures a smooth pressure change between the pressure at the final stage of the holding pressure (the second stage pressure in the example shown in FIG. 3) and the back pressure during metering. Therefore, in the example shown in FIG. 3, the setting criterion storage unit 103 stores, for example, a value of "14" [MPa] as the setting criterion related to the pressure before metering. Note that the setting criterion storage unit 103 may store, as the setting criterion related to the pressure before metering, a predetermined conditional expression that takes into account the pressure at the final stage of the holding pressure and the back pressure during metering.

[0044] Regarding the conditions for metering, the cooling time is usually set to be much longer than the metering time (see Figure 4). In this case, shortening the cooling time may shorten the cycle time. In other words, the cooling time for cooling the already molded part and the metering of the material for the new molded part start simultaneously, and the next process starts when both are completed.

[0045] Therefore, by shortening the longer of the cooling time and the weighing time, the overall cycle time can be shortened. Therefore, the setting standard storage unit 103 stores the conditional expression "cooling time≦weighing time+α" (where α [seconds] is a predetermined time). In other words, the cooling time can be shortened so as to satisfy this conditional expression.

[0046] The recommendation unit 104 recommends a change in the molding conditions by changing the display mode of the display related to the molding conditions based on the molding conditions and the setting criteria for the molding conditions acquired by the acquisition unit 102.

[0047] Furthermore, the recommendation unit 104 may recommend a change in molding conditions based on a conditional expression that uses as a variable another molding condition different from the molding condition for which a change is recommended.

[0048] For example, in the example shown in FIG. 3 , among the conditions related to the dwelling pressure, the dwelling pressure of the first stage is set to "100" [MPa], and the dwelling pressure of the second stage is set to "20" [MPa]. Meanwhile, the setting standard storage unit 103 stores "0.4x≦y≦0.6x" as the setting standard for the dwelling pressure of the second stage. Here, "y" is the dwelling pressure of the second stage, and "x" is the dwelling pressure of the first stage. Furthermore, the dwelling pressure of the second stage is a molding condition that is recommended to be changed, and the dwelling pressure of the first stage is another molding condition.

[0049] In this case, the molding condition set as the pressure for the second-stage dwelling pressure does not satisfy the set criteria, so the recommendation unit 104 recommends changing the pressure for the second-stage dwelling pressure among the conditions related to the dwelling pressure.

[0050] 5 is a diagram showing an example of a display screen on which the recommendation unit 104 recommends a change in molding conditions. The recommendation unit 104 recommends a change in the second-stage dwell pressure by, for example, changing the color of an area 522 indicating the second-stage dwell pressure from white to red.

[0051] The recommendation unit 104 may recommend changes to molding conditions based on a conditional expression that uses the molding conditions, the setting criteria, and molding data acquired when injection molding is performed as variables. For example, in the example shown in FIG. 3, the maximum injection pressure among the injection conditions is set to 120 [MPa]. The acquired maximum peak pressure is also 120 [MPa] (see FIG. 4). Meanwhile, the setting criteria storage unit 103 stores the conditional expression "maximum injection pressure > maximum peak pressure" as the setting criteria for the maximum injection pressure. In other words, the maximum injection pressure does not satisfy the setting criteria.

[0052] Therefore, the recommendation unit 104 recommends changing the maximum injection pressure by changing the color of the area 42 indicating the maximum injection pressure from white to red (see FIG. 5).

[0053] 3, the pressure reduction setting among the conditions related to measurement is set to "20" [mm]. Meanwhile, the setting standard storage unit 103 stores the value 3 [mm] as the setting standard for the pressure reduction setting.

[0054] Therefore, the recommendation unit 104 recommends changing the reduced pressure setting by changing the color of the area 66 indicating the reduced pressure setting from white to red (see FIG. 5).

[0055] 3, the pressure before metering, which is one of the conditions related to pressure maintenance, is set to 20 MPa. Meanwhile, the setting reference storage unit 103 stores 14 MPa as the setting reference for the pressure before metering.

[0056] Therefore, recommendation unit 104 recommends changing the pre-metering pressure by changing the color of area 520 indicating the pre-metering pressure from white to red (see FIG. 5).

[0057] In the example shown in FIG. 3 , the cooling time is set to 20 seconds among the conditions related to the measurement. The acquired measurement time is 5 seconds. Meanwhile, the setting criterion storage unit 103 stores the conditional expression "cooling time≦measurement time+α" as the setting criterion for the cooling time. For example, if α is 12 seconds, the cooling time does not satisfy this conditional expression.

[0058] Therefore, the recommendation unit 104 recommends changing the cooling time by changing the color of the area 65 indicating the cooling time from white to red (see FIG. 5).

[0059] The change in the display mode of the molding conditions may be at least one of a change in the color of the characters indicating the molding conditions, a change in the style of the characters, a change in the color of the display area of ​​the characters, a change in the display of the molding condition icon, and a change in the brightness of at least one of the characters and the display area. Changes in the character style include, for example, a change in font, a change from solid to italic, or a change from thin to bold.

[0060] Changing the icon display includes, for example, displaying an icon indicating a recommendation for a change near the display relating to a change in molding conditions.

[0061] The recommendation unit 104 may recommend a change to the molding conditions by displaying a summary of setting items that are recommended to be changed.

[0062] 6 is a diagram showing an example of a display mode in which setting items that are recommended to be changed are collectively displayed. The recommendation unit 104 displays, for example, an image including a link, the setting items that are recommended to be changed, the current values ​​of the molding conditions set for the setting items, and the recommended values ​​on the display screen.

[0063] A link is a link to a display area where each setting item is displayed. In other words, by operating a right-pointing arrow, you can move to the display area of ​​the setting item associated with that arrow. For example, by operating the link "Holding pressure - Holding pressure 2," you can move to area 522, which shows the pressure of the second stage of holding pressure.

[0064] Next, the flow of processing executed by the condition presentation device 1 will be described.

[0065] 7 is a flowchart showing an example of the flow of processing executed by the condition presentation device 1. In the condition presentation device 1, first, the acquisition unit 102 acquires molding conditions (step S1).

[0066] Next, the acquisition unit 102 acquires molding data (step S2). That is, the injection molding machine performs injection molding based on the set molding conditions, and the condition presentation device 1 acquires the molding data.

[0067] Finally, the recommendation unit 104 recommends changes to the molding conditions based on the molding conditions and setting criteria for the molding conditions acquired by the acquisition unit 102, or based on the molding conditions, setting criteria, and molding data (step S3), and the processing ends.

[0068] As described above, the condition presentation device 1 includes an acquisition unit 102 that acquires molding conditions for injection molding in an injection molding machine, and a recommendation unit 104 that recommends changes to the molding conditions by changing the display mode of the display related to the molding conditions based on the molding conditions and setting criteria for the molding conditions acquired by the acquisition unit 102. In addition, the recommendation unit 104 recommends changes to the molding conditions based on a conditional expression that uses as variables at least one of molding conditions other than the molding conditions recommended to be changed and molding data acquired when injection molding is performed.

[0069] Therefore, it is possible to provide a condition presentation device 1 that has a simple configuration and is easy for the operator to operate. Specifically, the condition presentation device 1 can evaluate molding conditions using numerical values, numerical ranges, or simple conditional expressions. In other words, the condition presentation device 1 can recommend to the operator to change the molding conditions set by the operator to appropriate molding conditions without using a complex evaluation expression.

[0070] The change in the display mode of the molding conditions is at least one of a change in the color of the characters indicating the molding conditions, a change in the style of the characters, a change in the color of the display area of ​​the characters, a change in the display of the molding condition icons, and a change in the brightness of at least one of the characters and the display area. Therefore, the recommendation unit 104 can reliably recommend changes to the molding conditions to the operator.

[0071] In the above-described embodiment, the recommendation unit 104 recommends a change in the molding conditions by changing the display mode of the display related to the display of the molding conditions. The recommendation unit 104 may further present at least one of a recommended value and a recommended range.

[0072] 8 is a diagram showing an example of a display screen on which the recommendation unit 104 presents the recommended value and the recommended range. The recommendation unit 104 displays the recommended value or the recommended range on the display screen using, for example, a pop-up screen in the shape of a balloon.

[0073] For example, the recommendation unit 104 displays the text "Recommended: 40-60" in a pop-up screen that appears adjacent to an area 522 that indicates the second-stage holding pressure among the conditions related to the holding pressure. That is, the recommendation unit 104 recommends a pressure of 40 MPa or more and 60 MPa or less as the second-stage holding pressure.

[0074] Furthermore, the recommendation unit 104 displays the text "Recommended: >120" in a pop-up screen that appears adjacent to the area 42 that indicates the maximum injection pressure among the injection conditions. In other words, the recommendation unit 104 recommends a maximum injection pressure greater than 120 MPa.

[0075] Furthermore, the recommendation unit 104 displays the character string "Recommended: 3" in a pop-up screen that appears adjacent to the area 66 that indicates the reduced pressure setting among the conditions related to measurement. That is, the recommendation unit 104 recommends a reduced pressure setting value of 3 [mm].

[0076] Furthermore, the recommendation unit 104 displays the character string "Recommended: 14" in a pop-up screen that appears adjacent to an area 520 that indicates the pre-measurement pressure among the conditions related to pressure retention. That is, the recommendation unit 104 recommends 14 [MPa] as the pre-measurement pressure.

[0077] Furthermore, the recommendation unit 104 displays the text "Recommended: < 20" in a pop-up screen that appears adjacent to the area 65 that indicates the cooling time among the conditions related to weighing. In other words, the recommendation unit 104 recommends a short cooling time of less than 20 seconds.

[0078] The condition presentation device 1 may present information indicating the reason why a change in molding conditions is recommended.

[0079] 9 is a diagram showing an example of a display mode of information indicating the reason for recommending a change in molding conditions. As described above, when the maximum injection pressure is the same as the maximum peak pressure, it is recommended that the maximum injection pressure be set to a pressure greater than the maximum peak pressure. Therefore, the recommendation unit 104 displays the following text on the display screen: "Recommended: >120 'Maximum peak pressure or greater' is recommended." Here, the description "maximum peak pressure or greater" is the reason for recommending a change in molding conditions.

[0080] The condition presentation device may recommend molding conditions using setting criteria input by the user.

[0081] Fig. 10 is a block diagram showing an example of the functions of a condition presentation device including an input accepting unit that accepts setting criteria input by a user. The condition presentation device 10 shown in Fig. 10 differs from the condition presentation device 1 shown in Fig. 2 in that it includes an input accepting unit 105, but is the same in other respects. Therefore, the input accepting unit 105 will be described here, and descriptions of the other units will be omitted.

[0082] The input accepting unit 105 accepts input of information indicating setting criteria. That is, the input accepting unit 105 accepts input of setting criteria defined by the user. The input accepting unit 105 may also accept input by the user to modify setting criteria previously stored in the setting criteria storage unit 103. This allows the user to input setting criteria created based on their own experience.

[0083] In the above-described embodiment, one setting criterion is provided for one setting item. However, multiple setting criterion may be provided for one setting item. In other words, the setting criterion may include multiple criteria. In other words, the setting criterion may include multiple types of criteria.

[0084] The multiple criteria may include, for example, at least one of a first criterion for removing restrictions on molding data acquired when injection molding is performed, a second criterion for stably molding a molded product by injection molding, a third criterion for shortening the injection molding cycle time, and a fourth criterion for reducing the load on the injection molding machine. In other words, multiple criteria from the first, second, third, and fourth criteria may be set for one setting item.

[0085] The first criterion for lifting the restriction on the molding data acquired when injection molding is performed is, for example, a condition for lifting the restriction on the maximum peak pressure when the maximum peak pressure is limited by the maximum injection pressure.

[0086] The second standard for ensuring stable molding of molded products by injection molding is a standard for preventing molding defects caused by sudden pressure changes during, for example, dwelling or metering. That is, it is a setting standard set for the pressure of the second dwelling. The second standard is also a setting standard for reducing the pressure in the metering conditions.

[0087] A third standard for reducing the cycle time of injection molding is, for example, the setting standard for the cooling time in the standards relating to metering.

[0088] A fourth criterion for reducing the load on the injection molding machine is, for example, the setting criterion for the pre-metering pressure, which is one of the conditions related to pressure holding. That is, by setting the pre-metering pressure as a predetermined criterion, it is possible to reduce sudden pressure changes in the injection molding machine, in other words, the load on the injection molding machine.

[0089] The multiple criteria may include setting criteria accepted by the input accepting unit 105. Fig. 11 is a diagram illustrating an example in which multiple criteria are set for one setting item. In the example shown in Fig. 11, three criteria are set as setting criteria for the maximum injection pressure. The three criteria are, for example, conditional formula 1, conditional formula 2, and conditional formula 3.

[0090] Conditional formula 1 is a function f with variables X1 and X2. Here, variables X1 and X2 are, for example, molding conditions or acquired data for other setting items other than the maximum injection pressure. Conditional formula 1 may also be, for example, a criterion for stably molding a molded product.

[0091] Conditional expression 2 is a function g with X1 as a variable. Conditional expression 2 may be, for example, a criterion for reducing the load on the injection molding machine.

[0092] Conditional expression 3 is a function h with variables X1 and X3. Conditional expression 3 may be, for example, a setting criterion accepted by the input accepting unit 105.

[0093] The condition presentation device may also include a selection receiving unit that receives a selection of a setting criterion to be set for each setting item.

[0094] Fig. 12 is a block diagram showing an example of the functions of a condition presentation device including a selection receiving unit. The condition presentation device 20 shown in Fig. 12 differs from the condition presentation device 1 shown in Fig. 2 in that it includes a selection receiving unit 106, but is the same in other respects. Therefore, only the selection receiving unit 106 will be described here, and descriptions of the other units will be omitted.

[0095] The selection receiving unit 106 receives the selection of at least one of the multiple criteria. The selection receiving unit 106 receives the selection of the setting criteria stored in the setting criteria storage unit 103. The selection receiving unit 106 receives the selection of the setting criteria to be set for each setting item, for example, via an input / output interface (not shown) of the condition presentation device 20. In other words, the user selects the setting criteria to be set for each setting item from the setting criteria stored in the setting criteria storage unit 103. This allows the user to set an appropriate setting criteria for each setting item.

[0096] The condition presentation device 20 may recommend changes to molding conditions in different display modes for each set setting criterion.

[0097] 13 is a diagram for explaining an example in which a change in molding conditions is recommended in a different display mode for each setting criterion set for each setting item. In the example shown in FIG. 13, four setting criteria, namely, the first criterion, the second criterion, the third criterion, and the fourth criterion, are set for each setting item.

[0098] In this case, the recommendation unit 104 determines whether to recommend a change in molding conditions based on multiple criteria, and if it determines that a change in molding conditions is recommended, it recommends a change in molding conditions in a display manner that differs for each of the multiple criteria.

[0099] For example, the recommendation unit 104 determines whether the molding conditions set for the second-stage dwell pressure satisfy each of the first condition, the second condition, the third condition, and the fourth condition. If the molding conditions set for the second-stage dwell pressure satisfy the second criterion, the third criterion, and the fourth criterion but do not satisfy the first criterion, the recommendation unit 104 changes the color of the area 522 indicating the second-stage dwell pressure from white to red.

[0100] Furthermore, if the molding conditions set for the maximum injection pressure satisfy the first, third, and fourth criteria but do not satisfy the second criterion, the recommendation unit 104 changes the color of the area 42 indicating the maximum injection pressure from white to green.

[0101] Furthermore, if the molding conditions set for the pre-metering pressure satisfy the first, second, and third criteria but do not satisfy the fourth criterion, the recommendation unit 104 changes the color of the area 520 indicating the pre-metering pressure from white to yellow.

[0102] Furthermore, if the molding conditions set for the cooling time satisfy the first, second, and fourth criteria but do not satisfy the third condition, the recommendation unit 104 changes the color of the area 65 indicating the cooling time from white to blue.

[0103] This allows the user to understand the criteria on which the changes to each setting item are recommended.

[0104] Furthermore, priorities may be assigned to multiple criteria. For example, the first criterion may have the highest priority, followed by the second criterion, the third criterion, and the fourth criterion in descending order.

[0105] In this case, if the molding conditions set for a certain setting item do not satisfy both the first and second criteria, it is recommended to change the molding conditions based on the first criterion. Specifically, if the molding conditions set for the pre-metering pressure do not satisfy the first and second criteria, it is recommended to change the area 520 indicating the pre-metering pressure to red based on the first criterion.

[0106] Furthermore, the recommendation unit 104 may display on the pop-up screen the criterion on which the change in molding conditions is being recommended. For example, if a change in molding conditions is recommended based on a first criterion with a higher priority, the recommendation unit 104 may display the string "First Criterion" on the pop-up screen. This allows the user to understand the criterion on which the change in molding conditions is being recommended.

[0107] The present disclosure is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit of the present disclosure. For example, any of the components of the embodiments of the present disclosure can be modified or omitted.

[0108] REFERENCE SIGNS LIST 1 Condition presentation device 10 Condition presentation device 20 Condition presentation device 11 Hardware processor 12 Bus 13 ROM 14 RAM 15 Non-volatile memory 16 First interface 17 Second interface 101 Molding condition storage unit 102 Acquisition unit 103 Setting standard storage unit 104 Recommendation unit 105 Input reception unit 106 Selection reception unit 2 Numerical control device 3 Sensor 4 Display area showing injection conditions 41 Area showing the number of stages of injection operation 42 Area showing maximum injection pressure 43 Area showing injection speed at each stage 44 Area showing switching position at each stage 5 Display area showing conditions related to holding pressure 51 Area showing the number of stages of holding pressure operation 52 Area showing pressure at each stage 520 Area showing pressure before metering 522 Area showing pressure of second stage holding pressure 53 Area showing time at each stage 6 Display area showing conditions related to metering 61 Area 62 indicating the number of stages of the metering operation; Area 63 indicating the back pressure at each stage; Area 64 indicating the rotation speed at each stage; Area 65 indicating the cooling time; Area 66 indicating the pressure reduction setting

Claims

1. An acquisition unit that acquires molding conditions for injection molding in the injection molding machine; A recommendation unit that recommends a change of the molding conditions by changing a display mode of the display related to the molding conditions based on the molding conditions and the setting criteria of the molding conditions acquired by the acquisition unit; A condition presentation device comprising:

2. The condition presentation device of claim 1, wherein the change in the display mode of the molding conditions is at least one of a change in color of the characters indicating the molding conditions, a change in style of the characters, a change in color of the display area of ​​the characters, a change in display of an icon of the molding conditions, and a change in brightness of at least one of the characters and the display area.

3. The set criteria include at least one of a recommended value of the molding condition and a recommended range of the molding condition, The condition presentation device according to claim 1 , wherein the recommendation unit presents at least one of the recommended value and the recommended range.

4. The condition presentation device according to claim 1 , wherein the setting criteria includes a plurality of criteria.

5. 5. The condition presentation device according to claim 4, wherein the plurality of criteria include at least one of a first criterion for lifting restrictions on molding data acquired when the injection molding is performed, a second criterion for stably molding a molded product by the injection molding, a third criterion for shortening a cycle time of the injection molding, and a fourth criterion for reducing a load on the injection molding machine.

6. The condition presentation device according to claim 4 , further comprising a selection receiving unit that receives a selection of at least one of the plurality of criteria.

7. the recommendation unit determines whether or not to recommend a change in the molding conditions based on the plurality of criteria; The condition presentation device according to claim 4 , wherein, when it is determined that a change in the molding conditions is recommended, the recommendation unit recommends the change in the molding conditions in the display manner that differs for each of the plurality of criteria.

8. The condition presentation device according to claim 1 or 2, wherein the recommendation unit recommends a change to the molding conditions based on a conditional equation having as variables at least one of other molding conditions different from the molding conditions recommended to be changed and molding data acquired when the injection molding is performed.

9. The condition presentation device according to claim 1 , further comprising an input receiving unit that receives an input of information indicating the setting criteria.

10. The condition presentation device according to claim 1 , wherein the recommendation unit further presents information indicating a reason for recommending the change in the molding conditions.

11. Obtaining molding conditions for injection molding in an injection molding machine; Recommending a change in the molding conditions by changing a display mode of the display related to the molding conditions based on the acquired molding conditions and the setting criteria of the molding conditions; A computer-readable storage medium that stores instructions for causing a computer to execute the above.