Injection molding management system

Abstract

The present application provides an injection molding management system capable of comprehensively judging the main cause of an adverse event occurring in injection molding to take countermeasures. The injection molding management system includes: a molded product identification information acquisition unit that acquires molded product identification information for identifying a molded product; an adverse event classification acquisition unit that acquires first adverse event classification information and second adverse event classification information in a case where the molded product is a defective product, the first adverse event classification information indicating a classification of an adverse event of the molded product, and the second adverse event classification information indicating a classification of an adverse event of the molded product different from the first adverse event classification information; and a storage unit that stores the first adverse event classification information and the second adverse event classification information in association with the molded product identification information of the molded product.

Description

Technical Field

[0001] This disclosure relates to an injection molding management system. Background Technology

[0002] Regarding the injection molding management system, Patent Document 1 discloses that users can select defect categories such as burns, under-filling, and shrinkage marks by selecting buttons, thereby storing the defect classification information in association with the injection number, and displaying the number of defects in a chart according to each position in the mold based on the defect classification information and the defect location information.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2014-69382

[0004] According to the diagram described in Patent Document 1, the user can visually confirm the number of defects occurring at various locations in the mold. Historically, there has been a demand in this technology for a comprehensive method to determine the root causes of defects generated during injection molding and to take countermeasures. Summary of the Invention

[0005] According to one aspect of this disclosure, an injection molding management system for molded articles is provided. The injection molding management system includes: an identification information acquisition unit for acquiring molded article identification information for identifying the molded article; a defect classification acquisition unit for acquiring first defect classification information and second defect classification information when the molded article is a defective article, wherein the first defect classification information indicates a defect classification of the molded article, and the second defect classification information indicates a defect classification of the molded article that is different from the first defect classification information; and a storage unit for storing the first defect classification information and the second defect classification information in association with the molded article identification information of the molded article. Attached Figure Description

[0006] Figure 1 This is an explanatory diagram showing a simplified structure of an injection molding management system.

[0007] Figure 2 This is a diagram illustrating an example of a database of offensive information.

[0008] Figure 3 This is a flowchart of the total processing performed by the processing department.

[0009] Figure 4 This is a graph showing an example of the total number of defective items.

[0010] Figure 5 This is an example of a chart showing the total number of defective items.

[0011] Figure 6 This is a graph showing other examples of the total number of defective items.

[0012] Figure 7 This is a graph showing other examples of the total number of defective items.

[0013] Figure 8 This is a graph showing other examples of the total number of defective items.

[0014] Figure 9 This is a graph showing other examples of the total number of defective items.

[0015] Figure 10 This is a diagram showing the input screen used to determine information representing a poor classification.

[0016] Figure 11 This is an example of an input screen showing information about the location and classification of defects.

[0017] Explanation of reference numerals in the attached figures

[0018] 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. Detailed Implementation

[0019] A. First implementation method:

[0020] Figure 1 This is an explanatory diagram showing a simplified configuration of the injection molding management system 10 in the first embodiment. The injection molding management system 10 in this embodiment includes 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 can be, for example, a LAN, a WAN, or the Internet. The injection molding machine 100, the material dryer 200, and the inspection device 300 can also be configured as an injection molding unit, for example, by placing them in the same housing or in connected housings and integrally combining them.

[0021] The injection molding machine 100 is an apparatus for performing injection molding. The injection molding machine 100 includes a first control unit 110, an injection unit (not shown), and a mold clamping unit. A molding die with a mold cavity is mounted on the mold clamping unit. The molding die can be made of metal, ceramic, or resin. A metal molding die is referred to as a metal mold. The first control unit 110 is configured as a computer having one or more processors, a storage device, and an input / output interface for inputting and outputting signals to and from the outside. The first control unit 110 can also be configured using multiple computers. The second control unit 210 of the material dryer 200 and the third control unit 310 of the inspection device 300 are configured in the same way as the first control unit 110.

[0022] The first control unit 110 controls various parts of the injection molding machine 100 to perform injection molding and form a molded article. More specifically, the first control unit 110 controls the mold clamping device to close the mold and controls the injection device to plasticize the material and inject it into the mold, thereby forming a molded article having a shape corresponding to the shape of the mold cavity provided in the mold. The molded article is transported to the inspection device 300 by a conveying device such as a take-out robot (not shown).

[0023] The first control unit 110 sends physical quantity information, representing physical quantities related to injection molding, to the management device 500. The physical quantity information includes measured values ​​obtained by various sensors on the injection molding machine 100, as well as various command values ​​related to injection molding. Command values ​​include, for example, values ​​set for the injection molding machine 100 such as injection filling time, injection pressure, and set temperature; measured values ​​are obtained by measuring their actual values ​​through sensors.

[0024] The material dryer 200 is a device for drying the material supplied to the injection molding machine 100. The material dryer 200 includes a second control unit 210, a heater (not shown), and a drying hopper. The material dryer 200 removes moisture from the air using a desiccant, heats the air using the heater, and then feeds it into the drying hopper to dry the material stored therein. The dried material is then pumped into the injection molding machine 100 via a pump (not shown). The second control unit 210 controls the drying temperature of the heater and the airflow rate of the drying air fed into the drying hopper.

[0025] The inspection device 300 is an image inspection apparatus. The inspection device 300 comprises a third control unit 310 and a camera. The third control unit 310 controls the camera to capture images of the molded product and performs image analysis on the captured images to perform an appearance inspection of the molded product. This appearance inspection checks for defects in the molded product such as burrs, shrinkage marks, burns, and blurriness. The inspection device 300 of this embodiment can capture images of the molded product from one direction and inspect for multiple defects based on a single captured image. The third control unit 310 sends inspection information indicating the inspection results of each molded product to the management device 500. The inspection information includes defect classification information indicating the type of defect in the molded product.

[0026] The terminal device 400 is configured as a computer including a CPU, a storage device, and a display unit 450. Examples of terminal devices 400 include tablet computers, laptop computers, smartphones, and handheld terminals. In this embodiment, the display unit 450 has a touch panel function. Various screens output from the management device 500 are displayed on the display unit 450. It should be noted that in other embodiments, the display unit 450 may also be integrated into the management device 500.

[0027] The management device 500 is configured as a computer comprising 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 using an auxiliary storage device such as a hard disk drive. The communication control unit 503 includes communication circuitry 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.

[0028] The processing unit 501 includes an identification information acquisition unit 510, a defective classification acquisition unit 520, and an arithmetic unit 530. The identification information acquisition unit 510, the defective classification acquisition unit 520, and the arithmetic unit 530 are implemented by the processing unit 501 executing the program stored in the storage unit 502. It should be noted that they can also be implemented by circuitry.

[0029] The identification information acquisition unit 510 acquires molded article identification information for identifying the molded article. The molded article identification information is, for example, a combination of batch number and injection number. In this embodiment, the identification information acquisition unit 510 acquires molded article identification information of inspected molded articles from the inspection device 300. The identification information acquisition unit 510 may also acquire molded article identification information from the injection molding machine 100.

[0030] When a molded product is classified as defective, the defect classification acquisition unit 520 acquires defect classification information indicating the type of defect in the molded product. This defect classification information may indicate categories such as burrs, shrinkage marks, burns, or blurring. In this embodiment, the defect classification acquisition unit 520 acquires inspection information including defect classification information from the inspection device 300. As described above, the inspection device 300 of this embodiment can inspect multiple defects based on a single image. Therefore, the defect classification acquisition unit 520 can acquire multiple defect classification information from the inspection device 300 for a single molded product. This multiple defect classification information includes first defect classification information indicating the type of defect in the molded product and second defect classification information indicating the type of defect that differs from the first defect classification information.

[0031] The calculation unit 530 calculates the total number of defective items obtained by the defective item classification acquisition unit 520 according to each totaling unit. For example, if the defective item classification acquisition unit 520 obtains first defective item classification information and second defective item classification information, the calculation unit 530 calculates the first number of defective items obtained by totaling the first defective item classification information according to each totaling unit, and the second number of defective items obtained by totaling the second defective item classification information according to each totaling unit. The totaling unit is a unit that summarizes the manufactured molded products, such as year, month, week, day, hour, batch, box, pallet, number of mold cavities, or type of molded product. The totaling unit can be predetermined or arbitrarily specified by the user. The defective item count information calculated by the calculation unit 530 is output to the terminal device 400 and displayed on the display unit 450.

[0032] The storage unit 502 stores a defect information database DB. Molded part identification information acquired by the identification information acquisition unit 510 and defect classification information acquired by the defect classification acquisition unit 520 are recorded in the defect information database DB in association. When the defect classification acquisition unit 520 acquires multiple defect classification information, such as first defect classification information and 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 part identification information.

[0033] Figure 2 This diagram illustrates an example of a defect information database (DB). The inspection date and time, the name of the inspected molded article, batch number, injection number, and the inspection results for burrs, shrinkage marks, burns, and blurring are all recorded in the defect information database (DB) of this embodiment. The combination of batch number and injection number corresponds to molded article identification information, and the inspection results for burrs, shrinkage marks, burns, and blurring correspond to defect classification information.

[0034] Figure 3This is a flowchart of the total processing performed by the processing unit 501. This total processing is used to display the number of defective items on the display unit 450.

[0035] In step S10, the identification information acquisition unit 510 of the processing unit 501 acquires the molded product identification information from the inspection device 300.

[0036] In step S12, the defect classification acquisition unit 520 of the processing unit 501 acquires defect classification information from the inspection device 300.

[0037] In step S14, the processing unit 501 records the molded product identification information obtained in step S10 and the defect classification information obtained in step S12 in the defect information database DB of the storage unit 502 in association.

[0038] In step S16, the calculation unit 530 of the processing unit 501 calculates the number of defective items by summing up each defect classification information according to each total unit.

[0039] Figure 4 This is a graph showing an example of the total number of defective items. Figure 4 The results of the total defect classification information are shown, with batches as the aggregate unit. Figure 4 In the example shown, the batch number is associated with the number of good products, the number of defective products, and the number of defective units in that batch. In the defective unit count information, the number of units in each defect category within each batch is recorded and totaled separately.

[0040] exist Figure 3 In step S18, the processing unit 501 sends the defective item count information obtained in step S16 by totaling each totaling unit 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 uses... Figure 4 The total results are displayed as a chart on display unit 450. It should be noted that display unit 450 can also display... Figure 4 The total results are shown in a table and chart.

[0041] Figure 5 This is an example graph showing the total number of defective items displayed graphically. Figure 5 In the image, the bar chart labeled "Number of Defects" shows the total number of defects for each batch. Figure 5In the diagram, it indicates that 2 defects were generated in each of batches 1 to 3. The bar chart labeled "Defect A" indicates that 2 defects classified as "Defect A" were generated in batch 2. The bar chart labeled "Defect B" indicates that 2 defects classified as "Defect B" were generated in batch 1 and 1 defect in batch 3. The bar chart labeled "Defect C" indicates that 1 defect was generated in batch 1 and 2 defect in batch 3. In this embodiment, one or more defect categories are recorded in the defect information database DB in association with a single molded product. That is, different defect categories are associated with a single molded product. Therefore, the total number of defects A, B, and C in each batch is not the same as the total number of defects.

[0042] according to Figure 5 The chart shown can be interpreted as follows.

[0043] (1) Even if the number of defects is the same, there will be many different defects.

[0044] (2) Defects B and C often occur simultaneously. Therefore, if a countermeasure is taken to reduce the number of defects in both defects B and C, the cause is the same. Furthermore, such verification is useful.

[0045] (3) In cases where the causes of defects are different, simply looking at a chart of defect numbers may sometimes appear to show no improvement and that countermeasures are ineffective. However, if... Figure 5 The chart shows that although the number of defective C products increased in batches 1 and 3, the number of defective B products decreased, which can be interpreted as the countermeasure being effective against defective B products.

[0046] (4) Defect A and other defects did not occur simultaneously, and the reasons may be different. Therefore, it is known in advance that due to the different patterns and causes of defects, multiple countermeasures are needed to improve the total number of defects. As a result, multiple countermeasures can be formulated in advance, and planned countermeasure actions can be carried out.

[0047] Figures 6-9 This is a graph showing other examples of the total number of defective items. Figure 6 The image shows an example of displaying the number of defective items A through C in each batch using a stacked bar chart. Figure 7 The image shows an example of a batch displaying the number of defective items A through C using side-by-side bar charts. Figure 8 The image shows an example of how a 100% stacked bar chart displays the proportion of defective batches A through C. Figure 9 The chart uses side-by-side bar graphs to represent the number of pieces in each batch for each defect category. By comparing these charts with... Figure 5 The charts shown are displayed together, or instead of Figure 5The charts shown can be used to display information that is useful to users.

[0048] According to the injection molding management system 10 of this embodiment described above, by storing multiple defect classification information in association with molded product identification information, users can comprehensively judge multiple defects existing in a molded product and take countermeasures. Therefore, the overall defects of the factory can be reduced. In addition, in this embodiment, since multiple defect classification information is displayed by batch or other aggregate units, users can easily identify multiple defects generated in that aggregate unit.

[0049] Here, we will explain the advantages of associating multiple defect categories with a single molded part, rather than associating one defect category with a single molded part. For example, suppose 15 pieces of defect A (e.g., warpage), 5 pieces of defect B (e.g., insufficient strength), 1 piece of defect C (e.g., burns), 1 piece of defect D (e.g., bubbles), and 1 piece of defect E (e.g., shrinkage marks) are detected. In this case, sometimes the user will explore countermeasures for the two cost-effective defects, warpage and insufficient strength, based on the detection results, and restart production from the next injection by changing the molding conditions to "reduce injection pressure, reduce injection time, and increase cylinder temperature." However, it is common for a molded part to contain not just one defect but multiple defects. For example, if the defects of insufficient strength and warpage include bubbles, changing the molding conditions to "reduce injection pressure, reduce injection time, and increase cylinder temperature" may make it easier to generate bubbles. This could increase the number of defective parts due to insufficient strength or bubbles, thus increasing the overall number of defective parts. Therefore, associating only one defect category with a molded product makes it difficult for users to take appropriate countermeasures. In contrast, in this embodiment, since multiple defect categories can be associated with a single molded product, the number of defects (e.g., bubbles) hidden by other representative defects becomes greater than the total number when only one defect category is associated with a single molded product. Therefore, users can consider not only warpage and insufficient strength but also bubbles, changing molding conditions towards "increasing the metal mold temperature and increasing the injection speed" and restarting production from the next injection. As a result, the overall defect count of the factory can be reduced.

[0050] Furthermore, in this embodiment, while multiple defect categories are associated with a single molded product, multiple defect categories of the same type are not associated with a single molded product. Associating multiple defect categories of the same type with a single molded product means, for example, associating two "burrs" as defect categories when burrs are generated on the side and bottom surfaces of the molded product respectively. Thus, if multiple defect categories of the same type are associated with a single molded product, when summing and displaying the results using a predetermined summing unit, it becomes impossible to determine whether the same defect category originated in one molded product or in different molded products. Therefore, for example, if five ambiguous defect categories are stored for one molded product, and one burr defect category is stored for each of the five molded products, a user viewing the total number of products might mistakenly assume that the ambiguous defects are sudden defects and that the burr defect countermeasures should be prioritized, thus prioritizing the ambiguous and burr defect countermeasures equally. Consequently, the user might misidentify a defect category that frequently occurs during the production process. However, in this embodiment, since multiple defect categories of the same type are not associated with a single molded product, such misidentification can be prevented.

[0051] It should be noted that in the first embodiment described above, the management device 500 obtains molded product identification information and defect classification information from the inspection device 300. Conversely, the management device 500 can also obtain molded product identification information and defect classification information through user input. The user can input this information into the management device 500 using an input device such as a keyboard, or input data obtained by combining data from other computers, etc., into the management device 500.

[0052] B. Second implementation method:

[0053] In the first embodiment, the defect classification acquisition unit 520 of the processing unit 501 acquires multiple defect classification information for a molded product identification information and stores it in the storage unit 502. In the second embodiment, the defect classification acquisition unit 520 determines representative defect classification information from two or more 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 that in the first embodiment.

[0054] Figure 10 This diagram illustrates an input screen used to determine representative defect classification information. In the second embodiment, it is assumed that the defect classification acquisition unit 520 acquires molded product identification information and defect classification information from the user through the input screen displayed on the display unit 450. Figure 10The input screen shown has drop-down lists for specifying defect categories for the first defect category, second defect category, third defect category, and fourth defect category. Users use these drop-down lists to specify one or more defect categories corresponding to the molded product identification information. The defect category acquisition unit 520 acquires the defect category information specified through each drop-down list, wherein the defect category information acquired from the drop-down list corresponding to the first defect category is determined as representative defect category information. Then, the processing unit 501 records the representative defect category information in the defect information database DB of the storage unit 502 in a manner distinguishable from other defect category information. In this embodiment, the calculation unit 530 calculates the representative defect number information obtained by summing the number of items representing the defect category information in each total unit and displays it on the display unit 450. When summing the number of items representing the defect category information in each total unit, its value is consistent with the defect number in each total unit. It should be noted that in Figure 10 In this context, although a dropdown list is used to determine the representative defect category information, other methods, such as configuring checkboxes for each defect category and allowing the user to determine the representative defect category information, can also be used to specify the representative defect category information from multiple defect category information.

[0055] According to the second embodiment described above, although multiple defect classification information can be stored in association with a single product type information, only the number of pieces representing defect classification information needs to be totaled during the totaling process. Therefore, the load on the calculation unit 530, which calculates the number of defects and the defect rate, can be reduced. It should be noted that in the second embodiment, not only defect classification information can be represented, but also... Figure 4 as well as Figure 5 The display shows the total number of items across multiple defect categories. Additionally, users can choose to display either the total result for multiple defect categories or a single result representing all defect categories.

[0056] In the second embodiment described above, the defect classification acquisition unit 520 determines representative defect classification information from the defect classification information obtained from the user via the input screen displayed on the display unit 450. Alternatively, the defect classification acquisition unit 520 may also determine representative defect classification information from the defect classification information obtained by the self-inspection device 300. In this case, for example, the defect classification acquisition unit 520 receives a pre-selection of representative defect classification information from the user and determines the specified representative defect classification information from the defect classification information obtained by the self-inspection device 300. It should be noted that the representative defect classification information may also be predetermined in the management device 500 without user selection.

[0057] C. Third implementation method:

[0058] In the second embodiment, the defect classification acquisition unit 520 acquires various defect classification information from the user through the input screen displayed on the display unit 450. In the third embodiment, the defect classification acquisition unit 520, through the input screen displayed on the display unit 450, not only receives various defect classification information but also receives selections indicating the locations where each defect occurs. The defect location information indicating the location of the defect is stored in the storage unit 502 in association with various defect classification information, including first defect classification information and second defect classification information.

[0059] Figure 11 This diagram illustrates an example of an input screen displaying information on the location and classification of defects. The input screen includes an area AR for receiving input of defect location information. The shape and size of the area AR correspond to the external shape of the molded product. The area AR is divided into smaller areas of predetermined size. The user can input defect location information by selecting the smaller area corresponding to the location of the defect using the touch panel function of the display unit 450. For example, after selecting the smaller area corresponding to the defect location, the user can select a suitable defect classification from a drop-down list for specifying defect classification located on the right side of the input screen, thereby specifying a defect classification for the selected area. By repeatedly selecting smaller areas and defect classifications, the user can establish a correspondence between different defect classifications and multiple smaller areas. The defect classification acquisition unit 520, by acquiring input operations from the terminal device 400 to the display unit 450, records multiple defect classification information and the defect location information corresponding to each defect classification in the defect information database DB of the storage unit 502, according to the identification information of each molded product.

[0060] According to the third embodiment described above, the defect location and defect classification information can be stored in the storage unit 502 for each molded product. Therefore, the number of defect classification information items for each defect location can be totaled and displayed on the display unit 450. Thus, the user can determine where and what kind of defect occurred in the molded product.

[0061] D. Other implementation methods:

[0062] In the above embodiment, the first defect classification information and the second defect classification information are recorded in the storage unit 502 in association with the product type information. That is, multiple different defect classification information are associated with a single product. Conversely, in the storage unit 502, the first defect classification information and the second defect classification information can also be associated with production unit identification information used to identify specific production units such as batches, boxes, and pallets. In this way, since multiple defect classifications can be associated with each production unit, the total number of defect classification information items can be calculated and displayed for each production unit. In other words, the storage unit 502 can also store... Figure 4 The database shown is not the database in the form of the database shown. Figure 2 The database shown is in the form of a defect information database (DB). In this case, for example, the defect classification acquisition unit 520 acquires defect classification information and defect classification quantity information from users or inspection devices for each production unit.

[0063] E. Other aspects:

[0064] This disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from its spirit. For example, technical features of embodiments corresponding to the technical features in the aspects described below can be appropriately replaced or combined to solve some or all of the above-described technical problems, or to achieve some or all of the above-described effects. In addition, if a technical feature is not described as an essential feature in this specification, it can be appropriately deleted.

[0065] (1) According to one aspect of the present disclosure, an injection molding management system is provided. The injection molding management system comprises: an identification information acquisition unit for acquiring molded article identification information for identifying molded articles; a defect classification acquisition unit for acquiring first defect classification information and second defect classification information when the molded article is a defective article, wherein the first defect classification information indicates a defect classification of the molded article, and the second defect classification information indicates a defect classification of the molded article that is different from the first defect classification information; and a storage unit for storing the first defect classification information and the second defect classification information in association with the molded article identification information of the molded article.

[0066] According to the injection molding management system in this field, by storing various defect classification information in association with molded product identification information, users can comprehensively judge the multiple defects existing in a molded product and take countermeasures. Therefore, the overall defect rate of the factory can be reduced.

[0067] (2) The above aspect may further include a calculation unit and a display unit. The calculation unit calculates a first number of defective items obtained by summing the first defect classification information into various total units and a second number of defective items obtained by summing the second defect classification information into various total units. The display unit displays the first number of defective items and the second number of defective items into various total units. According to this aspect, since multiple defect classification information can be summed and displayed into various total units, the user can easily distinguish the multiple defects generated in the total units.

[0068] (3) In the above aspect, the defect classification acquisition unit may determine 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 the injection molding management system may include a calculation unit that calculates the representative defect number information obtained by summing the representative defect classification information according to various summing units. According to this aspect, by summing the representative defect classification information, the load on the calculation unit can be reduced.

[0069] (4) In the above aspect, the storage unit may also store defect location information indicating the defect location in association with the first defect classification information and the second defect classification information. According to this aspect, defects corresponding to the location of the molded article can be identified.

[0070] (5) According to other aspects of this disclosure, an injection molding management system is provided. The injection molding management system comprises: a defect classification acquisition unit, which acquires first defect classification information and second defect classification information when the molded product is a defective product, wherein the first defect classification information indicates the defect classification of the molded product, and the second defect classification information indicates a defect classification of the molded product that is different from the first defect classification information; and a storage unit, which stores the first defect classification information and the second defect classification information in association with production unit identification information used to identify the production unit of the molded product.

Claims

1. An injection molding management system, characterized by, Possessing: an identification information acquisition section that acquires molded product identification information for identifying a molded product that has been manufactured; a defect classification acquisition section that, in a case where the molded product is a defective product, acquires first defect classification information and second defect classification information, the first defect classification information indicating a classification of a defect of the molded product, and the second defect classification information indicating a classification of a defect of the molded product that is different from the first defect classification information; and a storage section 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.

2. The injection molding management system of claim 1, wherein, The injection molding management system possesses: a calculation section that calculates first defective piece count information obtained by aggregating the first defect classification information by each aggregation unit, and second defective piece count information obtained by aggregating the second defect classification information by each aggregation unit; and a display section that displays the first defective piece count information and the second defective piece count information by each aggregation unit.

3. The injection molding management system according to claim 1, wherein the defect classification acquisition section determines representative defect classification information from two or more defect classification information including the first defect classification information and the second defect classification information, the injection molding management system possesses a calculation section that calculates representative defective piece count information obtained by aggregating the representative defect classification information by each aggregation unit.

4. The injection molding management system according to claim 1, wherein the storage section stores defect occurrence site information indicating a defect occurrence site in association with the first defect classification information and the second defect classification information.

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