Injection Molding Management System

Abstract

To provide a technique capable of taking a countermeasure by comprehensively determining a factor of defects generated in injection molding.SOLUTION: An injection molding management system comprises: an identification information acquisition part for acquiring molded article identification information for identifying a molded article; a defect classification acquisition part for acquiring first defect classification information representing classification of defects in the molded article and second defect classification information representing classification of defects different from the first defect classification information on the molded article; and a storage part for storing the first defect classification information and the second defect classification information in association with molded article identification information on the molded article.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to an injection molding management system.

Background Art

[0002] Regarding an injection molding management system, Patent Document 1 discloses that a user associates and stores defect classification information and shot numbers by selecting defect classifications such as burns, shorts, and sink marks using selection buttons, and graphically displays the number of defects for each position in the mold based on the defect classification information and defect occurrence location information.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the graphical display described in Patent Document 1, a user can visually confirm the number of defects occurring at each position of the mold. Conventionally, in this type of technology, there has been a need for a technology capable of comprehensively determining the causes of defects occurring in injection molding and taking countermeasures.

Means for Solving the Problems

[0005] According to one aspect of the present disclosure, an injection molding management system for a molded product is provided. This injection molding management system includes an identification information acquisition unit that acquires molded product identification information for identifying a molded product, a defect classification acquisition unit that acquires, when the molded product corresponds to a defective product, first defect classification information representing a classification of the defect of the molded product and second defect classification information representing a classification of a defect different from the first defect classification information of the molded product, and a storage unit that stores the first defect classification information and the second defect classification information in association with the molded product identification information of the molded product. [Brief explanation of the drawing]

[0006] [Figure 1] This is an explanatory diagram showing the schematic configuration of an injection molding management system. [Figure 2] This figure shows an example of a defective information database. [Figure 3] This is a flowchart of the aggregation process performed by the processing unit. [Figure 4] This figure shows an example of the aggregated results of defective product count information. [Figure 5] This figure shows an example of how the total number of defective items is displayed in a graph. [Figure 6] This figure shows another example of how the aggregated results of the number of defective items are displayed. [Figure 7] This figure shows another example of how the aggregated results of the number of defective items are displayed. [Figure 8] This figure shows another example of how the aggregated results of the number of defective items are displayed. [Figure 9] This figure shows another example of how the aggregated results of the number of defective items are displayed. [Figure 10] This figure shows the input screen for identifying representative defect classification information. [Figure 11] This figure shows an example of an input screen for defect location information and defect classification information. [Modes for carrying out the invention]

[0007] A. First Embodiment: Figure 1 is an explanatory diagram showing the schematic configuration of the injection molding management system 10 in the first embodiment. The injection molding management system 10 in this embodiment comprises an injection molding machine 100, a material dryer 200, an inspection device 300, a terminal device 400, and a management device 500. The management device 500 is communicatively connected to the injection molding machine 100, the material dryer 200, the inspection device 300, and the terminal device 400. In this embodiment, the management device 500 is configured to communicate with these devices via a network NT. The network NT may be, for example, a LAN, a WAN, or the Internet. The injection molding machine 100, the material dryer 200, and the inspection device 300 may be configured as an injection molding unit by being arranged in, for example, the same housing or connected housings and combined integrally.

[0008] The injection molding machine 100 is a device that performs injection molding. The injection molding machine 100 includes a first control unit 110 and an injection device and a mold clamping device, respectively (not shown). A mold having a cavity is mounted on the mold clamping device. The mold may be made of metal, ceramic, or resin. A metal mold is called a die. The first control unit 110 is composed of a computer that includes one or more processors, a memory device, and an input / output interface for inputting and outputting signals to and from the outside. The first control unit 110 may be composed of multiple computers. The second control unit 210 of the material dryer 200 and the third control unit 310 of the inspection device 300 have the same configuration as the first control unit 110.

[0009] The first control unit 110 controls each part of the injection molding machine 100 to perform injection molding and form a molded product. More specifically, the first control unit 110 controls the mold clamping device to clamp the mold and controls the injection device to plasticize the material and inject it into the mold, thereby forming a molded product having a shape corresponding to the shape of the cavity provided in the mold. The molded product is transported to the inspection device 300 by a transport device such as a removal robot (not shown).

[0010] The first control unit 110 transmits physical quantity information representing physical quantities related to injection molding to the management device 500. The physical quantity information includes measured values ​​measured by various sensors provided in the injection molding machine 100 and various command values ​​related to injection molding. The command values ​​are values ​​set in the injection molding machine 100, such as injection filling time, injection pressure, and set temperature, while the measured values ​​are the actual values ​​of these measured by the sensors.

[0011] The material dryer 200 is a device for drying the material to be supplied to the injection molding machine 100. The material dryer 200 comprises a second control unit 210 and a heater and a drying hopper, which are not shown. The material dryer 200 removes moisture from the air using a desiccant, heats the dry air with the heater, and sends it to the drying hopper to dry the material stored in the drying hopper. The dried material is then pumped to the injection molding machine 100 by a pressure pump, which is not shown. The second control unit 210 controls the drying temperature of the heater and, dry This controls the airflow rate of dry air supplied to the hopper.

[0012] The inspection device 300 is an image inspection device. The inspection device 300 consists of a third control unit 310 and a camera. The third control unit 310 controls the camera to image the molded product and performs visual inspection of the molded product by analyzing the image. This visual inspection allows for the detection of defects in the molded product, such as burrs, sink marks, discoloration, and clouding. The inspection device 300 of this embodiment can photograph the molded product from one direction and inspect multiple types of defects from a single image. For each molded product, the third control unit 310 transmits inspection information representing the inspection result of the molded product to the management device 500. The inspection information includes defect classification information representing the type of defect in the molded product.

[0013] The terminal device 400 is configured as a computer including a CPU, a storage device, and a display unit 450. As the terminal device 400, for example, a tablet terminal, a notebook computer, a smartphone, or a handy terminal can be applied. In the present embodiment, the display unit 450 is provided with a touch panel function. Various screens output from the management device 500 are displayed on the display unit 450. In other embodiments, the display unit 450 may be provided in the management device 500.

[0014] The management device 500 is configured by a computer including a processing unit 501, a storage unit 502, and a communication control unit 503. The processing unit 501 includes one or more processors and a main storage device. The storage unit 502 is configured by an auxiliary storage device such as a hard disk drive. The communication control unit 503 includes a communication circuit for controlling communication with other devices such as the injection molding machine 100, the material dryer 200, the inspection device 300, and the terminal device 400.

[0015] The processing unit 501 includes an identification information acquisition unit 510, a defect classification acquisition unit 520, and an arithmetic unit 530. The identification information acquisition unit 510, the defect classification acquisition unit 520, and the arithmetic unit 530 are realized by the processing unit 501 executing a program stored in the storage unit 502. Note that these may also be realized by a circuit.

[0016] The identification information acquisition unit 510 acquires molding product identification information for identifying a molding product. The molding product identification information is composed of, for example, a combination of a lot number and a shot number. In the present embodiment, the identification information acquisition unit 510 acquires the molding product identification information of the inspected molding product from the inspection device 300. The identification information acquisition unit 510 may acquire the molding product identification information from the injection molding machine 100.

[0017] When the molded product corresponds to a defective product, the defect classification acquisition unit 520 acquires defect classification information indicating the classification of the defect of the molded product. The defect classification information represents classifications of defects such as burrs, sink marks, burns, and cloudiness. In the present embodiment, the defect classification acquisition unit 520 acquires inspection information including defect classification information from the inspection apparatus 300. As described above, the inspection apparatus 300 of the present embodiment can inspect a plurality of types of defects from a single image. Therefore, the defect classification acquisition unit 520 can acquire a plurality of types of defect classification information from the inspection apparatus 300 for one molded product. The plurality of types of defect classification information includes first defect classification information representing the classification of the defect of the molded product and second defect classification information representing a classification of a defect different from the first defect classification information.

[0018] The calculation unit 530 performs aggregation of the defect classifications acquired by the defect classification acquisition unit 520 for each aggregation unit. For example, when the defect classification acquisition unit 520 acquires the first defect classification information and the second defect classification information, the calculation unit 530 calculates first defect count information obtained by aggregating the first defect classification information for each aggregation unit and second defect count information obtained by aggregating the second defect classification information for each aggregation unit. The aggregation unit is a unit of a group in which molded products are manufactured, such as a yearly unit, a monthly unit, a weekly unit, a daily unit, an hourly unit, a lot unit, a box unit, a tray unit, a number of mold removals unit, or a molded product type unit. The aggregation unit may be determined in advance or may be arbitrarily specified by the user. The defect count information calculated by the calculation unit 530 is output to the terminal device 400 and displayed on the display unit 450.

[0019] [[ID=~8]]The storage unit 502 stores a defect information database DB. In the defect information database DB, the molded product identification information acquired by the identification information acquisition unit 510 and the defect classification information acquired by the defect classification acquisition unit 520 are recorded in association with each other. When the defect classification acquisition unit 520 acquires a plurality of types of defect classification information, for example, the first defect classification information and the second defect classification information, the first defect classification information and the second defect classification information are recorded in the defect information database DB in association with the molded product identification information.

[0020] Figure 2 shows an example of a defect information database DB. In this embodiment, the defect information database DB records the date and time of inspection performed by the inspection device 300, the name of the molded product that was inspected, the lot number, the shot number, and the inspection results for burrs, sink marks, burn marks, and clouding, all associated with each other. The combination of lot number and shot number corresponds to molded product identification information, and the inspection results for burrs, sink marks, burn marks, and clouding correspond to defect classification information.

[0021] Figure 3 is a flowchart of the aggregation process performed by the processing unit 501. This aggregation process is for displaying the number of defective items on the display unit 450.

[0022] In step S10, the identification information acquisition unit 510 of the processing unit 501 acquires molded product identification information from the inspection device 300.

[0023] In step S12, the defective classification acquisition unit 520 of the processing unit 501 acquires defective classification information from the inspection device 300.

[0024] In step S14, the processing unit 501 associates the molded product identification information obtained in step S10 with the defect classification information obtained in step S12 and records it in the defect information database DB of the storage unit 502.

[0025] In step S16, the calculation unit 530 of the processing unit 501 calculates the number of defects by aggregating the defect classification information for each aggregation unit.

[0026] Figure 4 shows an example of the aggregated results of defect count information. Figure 4 shows the results of aggregating defect classification information using lots as the aggregation unit. In the example shown in Figure 4, the number of good molded products, the number of defective molded products, and the defect count information are associated with each lot number. The defect count information includes the aggregated number of each defect classification in each lot.

[0027] In step S18 of Figure 3, the processing unit 501 transmits the defect count information aggregated for each aggregation unit in step S16 to the terminal device 400. The terminal device 400 displays the received information on the display unit 450. In this embodiment, the management device 500 displays the aggregation results shown in Figure 4 as a graph on the display unit 450. The display unit 450 may also display the aggregation results table shown in Figure 4 along with the graph.

[0028] Figure 5 shows an example of how the aggregated number of defects is displayed in a graph. In Figure 5, the bar graph labeled "Number of Defects" shows the total number of defects for each lot. Figure 5 shows that two defects occurred in each of lots 1 to 3. The bar graph labeled "Defect A" shows that there were two defects classified as "Defect A" in lot 2. The bar graph labeled "Defect B" shows that there were two defects classified as "Defect B" in lot 1 and one defect in lot 3. The bar graph labeled "Defect C" shows that there was one defect classified as "Defect C" in lot 1 and two defects in lot 3. In this embodiment, one or more defect classifications are associated with a single molded product and recorded in the defect information database DB. In other words, different defect classifications are associated with a single molded product. Therefore, the sum of the number of defects A, B, and C in each lot does not match the total number of defects.

[0029] The following can be inferred from the graph shown in Figure 5. (1) Even if the number of defects is the same, there may be multiple different types of defects. (2) Defects B and C often occur simultaneously. Therefore, if a single countermeasure reduces the number of both defects B and C, it indicates that the cause was the same. This method is also useful for such verification. (3) When the causes of defects differ, a graph showing only the number of defects may give the impression that there has been no improvement and that the countermeasures were ineffective. However, in the graph shown in Figure 5, although the number of defects C increased between Lot 1 and Lot 3, the number of defects B decreased, so it can be seen that the countermeasures were effective against defects B. (4) Defect A and the other defects do not occur simultaneously, and their causes may be different. Therefore, because the defect modes and causes differ, it is known in advance that multiple countermeasures are necessary to improve the total number of defects. As a result, multiple countermeasures can be planned in advance, enabling systematic countermeasure activities.

[0030] Figures 6-9 show other examples of how the aggregated results of the number of defects can be displayed. Figure 6 shows an example where the number of defects A-C in each lot is displayed as a stacked bar graph. Figure 7 shows an example where the number of defects A-C in each lot is displayed as a horizontal bar graph. Figure 8 shows an example where the percentage of defects A-C in each lot is displayed as a 100% stacked bar graph. Figure 9 shows the number of defects in each lot for each defect category as a horizontal bar graph. These graphs can also be displayed together with the graph shown in Figure 5, or in place of the graph shown in Figure 5, to provide users with useful information.

[0031] As described above, the injection molding management system 10 of this embodiment stores multiple types of defect classification information in association with molded product identification information, enabling the user to comprehensively assess multiple defects present in a single molded product and take appropriate countermeasures. This reduces defects across the entire factory. Furthermore, in this embodiment, multiple types of defect classification information are aggregated and displayed for each aggregation unit, such as a lot, allowing the user to easily recognize multiple types of defects that occurred in that aggregation unit.

[0032] Here, we will explain the advantages of associating multiple types of defects with a single molded part, rather than assigning only one defect classification to each part. For example, suppose 15 defects of defect A (e.g., warping), 5 defects of defect B (e.g., insufficient strength), 1 defect of defect C (e.g., burning), 1 defect of defect D (e.g., air bubbles), and 1 defect of defect E (e.g., sink marks) are detected. In this case, the user may consider countermeasures for the two defects that are most cost-effective based on these detection results, such as warping and insufficient strength, and may resume production from the next lot by changing the molding conditions in the direction of "reducing injection pressure, reducing injection time, and increasing cylinder temperature." However, a single molded part often contains not just one but multiple types of defects. For example, if defective products exhibiting insufficient strength or warping also contain air bubbles, changing the molding conditions in the direction of "reducing injection pressure, reducing injection time, and increasing cylinder temperature" may make it easier for air bubbles to form. This could lead to an increase in the number of defective products due to air bubbles forming in areas where strength is needed, or an increase in the number of defective products due to air bubbles, potentially increasing the overall number of defective products. Therefore, associating only one defect category with a single molded product presents a problem in that it is difficult for users to take appropriate countermeasures. In contrast, in this embodiment, multiple types of defect categories can be associated with a single molded product, so the number of defects hidden by other typical defects (e.g., air bubbles) will be higher than the aggregated result when only one defect category is associated with a single molded product. Therefore, users can consider not only warping and insufficient strength but also air bubbles, and change the molding conditions in the direction of "increasing mold temperature and increasing injection speed" to resume production from the next lot. As a result, it becomes possible to reduce the overall number of defects in the factory.

[0033] Furthermore, in this embodiment, although multiple types of defect classifications are associated with a single molded product, multiple defects of the same type are not associated with a single molded product. Associating multiple defects of the same type with a single molded product means, for example, if burrs are present on both the side and bottom surfaces of a molded product, two "burr" defects are associated with it. If multiple defects of the same type are associated with a single molded product in this way, when the data is aggregated and displayed in a predetermined aggregation unit, it becomes impossible to determine whether the same defect classification occurred in one molded product or in different molded products. For example, if five "cloudy" defect classifications are stored for one molded product and one "burr" defect classification is stored for each of the five molded products, a user looking at the aggregated number of cases may treat cloudy and burr defect countermeasures as having equal priority, even though cloudy defects are sudden defects and countermeasures for burr defects should be prioritized. Consequently, users may misidentify defect classifications that frequently occur in the production process. However, in this embodiment, since multiple defect classifications of the same type are not associated with a single molded product, it is possible to prevent such misidentification.

[0034] In the first embodiment described above, the management device 500 obtains molded product identification information and defect classification information from the inspection device 300. In contrast, the management device 500 may also obtain molded product identification information and defect classification information through user input. The user may input this information into the management device 500 using an input device such as a keyboard, or they may input data compiled on another computer into the management device 500.

[0035] B. Second Embodiment: In the first embodiment, the defect classification acquisition unit 520 of the processing unit 501 acquires multiple types of defect classification information for a single molded product identification information and stores it in the storage unit 502. In the second embodiment, the defect classification acquisition unit 520 identifies representative defect classification information from two or more types of defect classification information, including first defect classification information and second defect classification information. The configuration of the injection molding management system 10 in the second embodiment is the same as in the first embodiment.

[0036] Figure 10 shows an input screen for identifying representative defect classification information. In the second embodiment, the defect classification acquisition unit 520 acquires molded product identification information and defect classification information from the user through an input screen displayed on the display unit 450. The input screen shown in Figure 10 has drop-down lists for specifying defect classifications, one for the first defect classification, one for the second defect classification, one for the third defect classification, and one for the fourth defect classification. The user uses these drop-down lists to specify one or more defect classifications corresponding to the molded product identification information. The defect classification acquisition unit 520 acquires the defect classification information specified by each drop-down list, and identifies the defect classification information acquired from the drop-down list corresponding to the first defect classification as representative defect classification information. Then, the processing unit 501 records the representative defect classification information in the defect information database DB of the storage unit 502 in a way that makes it distinguishable from other defect classification information. In this embodiment, the calculation unit 530 calculates representative defect count information by aggregating the number of representative defect classification information for each aggregation unit and displays it on the display unit 450. Representative defect classification for each aggregation unit information When the number of cases is aggregated, the value matches the number of defects for each aggregation unit. Note that in Figure 10, a dropdown list was used to identify the representative defect classification information, but it is also acceptable to use a method that allows the user to specify the representative defect classification information from among multiple defect classifications, for example, by placing checkboxes for each defect classification.

[0037] According to the second embodiment described above, although multiple types of defect classification information can be associated and stored with a single molded product type information, when aggregating, it is only necessary to aggregate the number of representative defect classification information entries. Therefore, the load on the calculation unit 530 that calculates the number of defects and the defect rate can be reduced. In addition, in the second embodiment as well, the number of entries for multiple types of defect classification information may be aggregated and displayed, not just representative defect classification information, as shown in Figures 4 and 5. Furthermore, the user may be able to select between displaying the aggregated results of multiple types of defect classification information and displaying the aggregated results of representative defect classification information.

[0038] In the second embodiment described above, the defect classification acquisition unit 520 identifies representative defect classification information from among the defect classification information acquired from the user through the input screen displayed on the display unit 450. Alternatively, the defect classification acquisition unit 520 may identify representative defect classification information from among the defect classification information acquired from the inspection device 300. In this case, for example, the defect classification acquisition unit 520 may accept a designation of representative defect classification information from the user in advance and identify the designated representative defect classification information from among the defect classification information acquired from the inspection device 300. Note that the representative defect classification information may not be selected by the user, but may be predetermined by the management device 500.

[0039] C. Third Embodiment: In the second embodiment, the defect classification acquisition unit 520 acquires multiple types of defect classification information from the user through an input screen displayed on the display unit 450. In the third embodiment, the defect classification acquisition unit 520 accepts not only multiple types of defect classification information but also the selection of defect locations indicating the location where each defect occurs, through an input screen displayed on the display unit 450. The storage unit 502 stores the first defect classification information and the second defect classification information. Report For each of the multiple defect classifications included, defect location information representing the location where the defect occurred is associated and stored.

[0040] Figure 11 shows an example of an input screen for defect location information and defect classification information. The input screen has an area AR that accepts input of defect location information. The shape and size of area AR correspond to the outer shape of the molded product. Area AR is divided into small areas of predetermined size. The user can input defect location information by selecting a small area corresponding to the location where the defect occurred using the touch panel function of the display unit 450. For example, after selecting a small area corresponding to the defect location, the user can specify a defect classification for the selected area by selecting the appropriate defect classification from a drop-down list for specifying defect classifications located on the right side of the input screen. The user can associate different defect classifications with multiple small areas by repeatedly selecting small areas and selecting defect classifications. The defect classification acquisition unit 520 acquires input operations to the display unit 450 from the terminal device 400 and records multiple types of defect classification information and defect location information corresponding to each defect classification in the defect information database DB of the storage unit 502 for each molded product identification information.

[0041] According to the third embodiment described above, the location of defects and defect classification information can be stored in the storage unit 502 for each molded product. Therefore, the number of defect classification information entries for each defect location can be aggregated and displayed on the display unit 450. This allows the user to understand what kind of defects are occurring and where in the molded product.

[0042] D. Other embodiments: In the above embodiment, the storage unit 502 stores the first defect classification information and the second defect classification information in association with the molded product type information. In other words, multiple types of different defect classification information are associated with a single molded product. Alternatively, the storage unit 502 may store the first defect classification information and the second defect classification information in association with production unit identification information for identifying a certain production unit such as a lot, box, or tray. By doing so, multiple types of defect classifications can be linked to each production unit, and the number of defect classification information entries can be aggregated and displayed for each production unit. In other words, the storage unit 502 may store a database in the form shown in Figure 4, rather than the defect information database DB shown in Figure 2. In this case, for example, the defect classification acquisition unit 520 stores the defect classification information and defect information for each production unit. Good case Numerical information is obtained from the user or the inspection device.

[0043] E. Other forms: This disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from its spirit. For example, the technical features of the embodiments corresponding to the technical features in each of the embodiments described below can be replaced or combined as appropriate in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate.

[0044] (1) According to one embodiment of the present disclosure, an injection molding management system is provided. This injection molding management system includes: an identification information acquisition unit that acquires molded product identification information for identifying a molded product; a defect classification acquisition unit that, if the molded product is a defective product, acquires first defect classification information representing the classification of the defect of the molded product and second defect classification information representing a defect classification different from the first defect classification information of the molded product; and a storage unit that stores the first defect classification information and the second defect classification information in association with the molded product identification information of the molded product. This type of injection molding management system allows users to comprehensively assess and address multiple types of defects present in a single molded product by associating and storing defect classification information with molded product identification information. This, in turn, can reduce defects across the entire factory.

[0045] (2) The above configuration may further include a calculation unit that calculates first defect count information obtained by aggregating the first defect classification information for each aggregation unit, and second defect count information obtained by aggregating the second defect classification information for each aggregation unit, and a display unit that displays the first defect count information and the second defect count information for each aggregation unit. With this configuration, multiple types of defect classification information can be aggregated and displayed for each aggregation unit, so that users can easily recognize multiple types of defects that occurred in the aggregation unit.

[0046] (3) In the above configuration, the defect classification acquisition unit may include a calculation unit that identifies representative defect classification information from two or more types of defect classification information, including the first defect classification information and the second defect classification information, and calculates representative defect count information by aggregating the representative defect classification information for each aggregation unit. In this configuration, the load on the calculation unit can be reduced by aggregating the representative defect classification information.

[0047] (4) In the above configuration, the storage unit may store defect location information, which represents the location of the defect, in association with the first defect classification information and the second defect classification information. According to this configuration, defects can be identified according to the location of the molded product.

[0048] (5) According to other forms of the present disclosure, an injection molding management system is provided. This injection molding management system includes a defect classification acquisition unit that acquires, when a molded product is a defective product, first defect classification information representing the classification of the defect of the molded product and second defect classification information representing a defect classification different from the first defect classification information of the molded product, and a storage unit that stores the first defect classification information and the second defect classification information in association with production unit identification information for identifying the production unit of the molded product. [Explanation of Symbols]

[0049] 10…Injection molding management system, 100…Injection molding machine, 110…First control unit, 200…Material dryer, 210…Second control unit, 300…Inspection device, 310…Third control unit, 400…Terminal device, 450…Display unit, 500…Management device, 501…Processing unit, 502…Storage unit, 503…Communication control unit, 510…Identification information acquisition unit, 520…Defect classification acquisition unit, 530…Calculation unit

Claims

1. Injection molding management system, An identification information acquisition unit that acquires molded product identification information for identifying molded products, If the molded product is found to be defective, the defect classification acquisition unit acquires first defect classification information representing the classification of the defect of the molded product, and second defect classification information representing a defect classification different from the first defect classification information of the molded product. A storage unit that stores the first defect classification information and the second defect classification information in association with the molded product identification information of the molded product, A calculation unit that calculates first defect count information obtained by aggregating the first defect classification information for each aggregation unit, and second defect count information obtained by aggregating the second defect classification information for each aggregation unit, A display unit that displays a graph representing the first number of defects and a graph representing the second number of defects, along with a graph that includes the sum of the first and second number of defects, arranged for each of the multiple aggregation units, An injection molding management system equipped with [specific features / features].

2. An injection molding management system according to claim 1, The defect classification acquisition unit identifies representative defect classification information from among two or more types of defect classification information, including the first defect classification information and the second defect classification information. The calculation unit calculates representative defect count information by aggregating the representative defect classification information for each aggregation unit. Injection molding management system.

3. An injection molding management system according to claim 1, The injection molding management system includes a memory unit that stores defect location information, which represents the location of a defect, in association with the first defect classification information and the second defect classification information.

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