Sewing management system and sewing management method

Abstract

To provide data for analyzing the cause of a defect of a sewn object.SOLUTION: A sewing management system comprises: a defect cause storage unit to store a plurality of defect items, which are items on defect causes for sewn objects sewn by operators using sewing machines; an input data acquisition unit to acquire input data indicating defect causes from an input device; a processing unit to classify the input data by defect item; and an output unit to output the classified input data.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The technology disclosed in this specification relates to a sewing management system and a sewing management method.

Background Art

[0002] In the technical field related to sewing management systems, a sewing management system as disclosed in Patent Document 1 is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The sewing object sewn in the sewing process is inspected in the inspection process. When the sewing object is determined to be defective in the inspection process, it is necessary to analyze the cause of the defect.

[0005] The technology disclosed in this specification aims to provide data for analyzing the cause of defects in sewing objects.

Means for Solving the Problems

[0006] This specification discloses a sewing management system. The sewing management system includes a defect cause storage unit that stores a plurality of items of defect causes of a sewing object sewn by an operator using a sewing machine, an input data acquisition unit that acquires input data indicating a defect cause from an input device, a processing unit that classifies the input data for each defective item, and an output unit that outputs the classified input data.

Effects of the Invention

[0007] According to the technology disclosed in this specification, data for analyzing the cause of defects in sewing objects can be provided.

Brief Description of the Drawings

[0008]

Figure 1

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Modes for Carrying Out the Invention

[0009] Hereinafter, embodiments of the present technology will be described with reference to the drawings, but the present technology is not limited to the embodiments. The components of the embodiments described below can be combined as appropriate. Also, some components may not be used.

[0010] [Sewing Management System] FIG. 1 is a diagram schematically showing a sewing management system 1 according to an embodiment. The sewing management system 1 includes a management device 3 that manages the production process of sewn products. The production process includes a sewing process of sewing a sewing target 100 using a sewing machine 2, and an inspection process of inspecting the sewing target 100 sewn in the sewing process. The sewing machine 2 is an industrial sewing machine. The sewn product is produced on a production line including the sewing machine 2. A plurality of sewing machines 2 are installed on the production line. The production line is installed in a sewing factory. The sewing machine 2 operates in the sewing factory. By sewing the sewing target 100 with the sewing machine 2, a sewn product is produced. In the embodiment, the management device 3 is installed in the sewing factory. Note that the management device 3 may be installed outside the sewing factory.

[0011] In the sewing process, by sewing the sewing target 100 with the sewing machine 2, a sewn product is produced. As the sewing target, fabric is exemplified. As the sewn product, clothing is exemplified.

[0012] In the sewing factory, a plurality of types of sewing machines 2 corresponding to the use are installed. In the sewing factory, a plurality of types of sewing machines 2 are installed so as to correspond to each of a plurality of sewing processes for producing sewn products. Examples of the types of the sewing machine 2 include a straight stitch sewing machine for sewing the body, a button sewing machine for attaching buttons to the body, and a pocket sewing machine for attaching pockets to the body. A large variety and a large number of sewing machines 2 are installed in one sewing factory. For simplicity of explanation, three sewing machines 2 are shown in FIG. 1. The first sewing machine 2A is used in the first process for producing sewn products. The second sewing machine 2B is used in the second process for producing sewn products. The third sewing machine 2C is used in the third process for producing sewn products. Note that a plurality of sewing machines 2 of one type may be installed in the sewing factory.

[0013] In a sewing factory, a manager, workers, and inspectors are employed. The manager manages the workers, the manager himself / herself, and the sewing machines 2. The workers sew the sewing object 100 using the sewing machines 2 in the sewing process. The inspectors inspect the sewing object 100 sewn by the sewing machines 2 in the inspection process. Each of the manager, the workers, and the inspectors may be regarded as a user of the sewing machines 2. The manager may be one person or a plurality of people. The workers may be a plurality of people or one person. For example, one worker may operate a plurality of sewing machines 2. The inspectors may be a plurality of people or one person.

[0014] The management device 3 includes a display device 4, an input device 5, and a management controller 6. The display device 4 displays display data. The display device 4 includes a flat panel display such as a liquid crystal display or an organic EL display. The input device 5 generates input data when operated by the manager. Note that the input device 5 may be operated by a worker or an operator. The input device 5 includes a touch panel (touch sensor) arranged on the display screen of the display device 4. Note that the input device 5 may be a computer keyboard, a mouse, or a voice input device. The management controller 6 includes a computer system. The management controller 6 has at least one processor and a main memory that stores a computer program executable by the processor.

[0015] The sewing machine 2 has an operation panel 7 and a sewing machine controller 8. The operation panel 7 generates operation data when operated by the worker. The operation panel 7 includes a touch panel (touch sensor) arranged on the display screen of the display. The sewing machine controller 8 includes a computer system. The sewing machine controller 8 has at least one processor and a main memory that stores a computer program executable by the processor.

[0016] The inspector inspects the sewing target 100 in the inspection process. The inspection of the sewing target 100 includes an intermediate inspection for inspecting the sewing target 100 after some sewing processes are completed, and a final inspection for inspecting the sewing target after all sewing processes are completed. The inspector holds the information terminal 11. As the information terminal 11, a tablet terminal or a smartphone is exemplified.

[0017] The management device 3 is shared by a plurality of sewing machines 2 and information terminals 11 in the sewing factory. The number of management devices 3 is less than the number of sewing machines 2. The management device 3 can communicate with each of the sewing machines 2 and the information terminals 11. The management controller 6 of the management device 3 communicates with the sewing controller 8 of the sewing machine 2 and each of the information terminals 11. The management controller 6, the sewing controller 8, and the information terminal 11 perform wireless communication. The management controller 6, the sewing controller 8, and the information terminal 11 perform wireless communication via a local area network (LAN). As the wireless LAN, Wifi (registered trademark) is exemplified. Note that the management controller 6, the sewing controller 8, and the information terminal 11 may perform wireless communication via a personal area network (PAN). As the wireless PAN, Bluetooth (registered trademark) is exemplified.

[0018] Based on the input data generated by operating the input device 5, the management controller 6 sends a control command to the sewing controller 8 of the sewing machine 2.

[0019] The sewing machine controller 8 transmits the operation data of the sewing machine 2 to the management controller 6. The operation data of the sewing machine 2 includes the operating conditions of the sewing machine 2. The operating conditions of the sewing machine 2 include at least one of the stitch length, stitch pitch, stitch pattern, feeding speed of the sewing object, number of stitches, thread tension, and pressing pressure of the sewing object. The sewing machine controller 8 monitors the operating conditions of the sewing machine 2. The sewing machine 2 is provided with sensors for detecting the operating conditions of the sewing machine 2. Examples of the sensors include a tension sensor for detecting the thread tension and a pressing pressure sensor for detecting the pressing pressure of the sewing object. The sewing machine controller 8 can monitor the operating conditions of the sewing machine 2 by acquiring the detection data of the sensors. Further, the sewing machine 2 has a sewing machine motor for operating the needle bar and the balance. The sewing machine controller 8 can monitor the operating conditions of the sewing machine 2 by acquiring the drive signal of the sewing machine motor. Also, the operation data of the sewing machine 2 indicates the operation history of the sewing machine 2. The operation history of the sewing machine 2 includes at least one of the operation date and time of the sewing machine 2, the continuous operation time of the sewing machine 2, the cumulative operation time of the sewing machine 2, the type of sewing object sewn by the sewing machine 2, the number of stitches during sewing, error information generated in the sewing machine 2, and the operator who operated the sewing machine 2.

[0020] The management controller 6 collects the operation data of each of the plurality of sewing machines 2. The management controller 6 causes the display device 4 to display the operation data of each of the plurality of sewing machines 2.

[0021] The inspector operates the input device of the information terminal 11 to input the inspection result of the sewing object 100 into the information terminal 11. The information terminal 11 transmits inspection data indicating the inspection result of the sewing object 100 to the management controller 6.

[0022] The management controller 6 transmits guidance data indicating the inspection items and inspection methods of the sewing object 100 to the information terminal 11. The guidance data is displayed on the display of the information terminal 11. The inspector inspects the sewing object 100 while confirming the guidance data displayed on the display.

[0023] [Computer System] FIG. 2 is a hardware configuration diagram showing the management controller 6 according to the embodiment. The management controller 6 includes a computer system 1000. The computer system 1000 includes a processor 1001 such as a CPU (Central Processing Unit), a main memory 1002 including a non-volatile memory such as a ROM (Read Only Memory) and a volatile memory such as a RAM (Random Access Memory), a storage 1003, and an interface 1004 including an input / output circuit. The functions of the management controller 6 are stored in the storage 1003 as a computer program. The processor 1001 reads the computer program from the storage 1003, expands it in the main memory 1002, and executes processing according to the computer program. Note that the computer program may be distributed to the computer system 1000 via a network.

[0024] Similarly, each of the sewing machine controller 8 and the information terminal 11 includes a computer system having a processor, a main memory, a storage, and an interface.

[0025] [Management device, sewing machine, and information terminal] FIG. 3 is a functional block diagram showing the management device 3, the sewing machine 2, and the information terminal 11 according to the embodiment. As shown in FIG. 3, the information terminal 11 includes a terminal controller 12, a display device 13 such as a flat panel display, and an input device 14 such as a touch panel. The input device 14 generates input data when operated by an inspector. Note that the input device 14 may be operated by an operator or an administrator. The terminal controller 12 transmits the input data generated when the input device 14 is operated to the management controller 6.

[0026] The management controller 6 has a failure cause storage unit 61, an input data acquisition unit 62, a processing unit 63, and an output unit 64.

[0027] The defect cause memory unit 61 stores a plurality of defect items, which are items of the defect causes of the sewing target 100 sewn by the operator using the sewing machine 2. The defect items indicating the defect causes are predetermined. In the embodiment, the defect items include a first item indicating that the sewing machine 2 is the defect cause, a second item indicating that the operator is the defect cause, and a third item indicating that the sewing target 100 is the defect cause. The defect cause related to the first item may be regarded as a mechanical system defect cause. The defect cause related to the second item may be regarded as an operation system defect cause. The defect cause related to the third item may be regarded as a material system defect item.

[0028] As the defect cause related to the first item, an abnormality of the seam formed on the sewing target 100 is exemplified. As the abnormality of the seam, an abnormality called "stitch skipping" in which at least one length of the seam becomes long, an abnormality called "thread breakage" in which at least a part of the seam disappears, and an abnormality called "lantern" in which at least one of the upper thread and the lower thread is slack in the sewing target are exemplified. The defect related to the first item is a defect caused by the sewing machine 2, such as poor adjustment or poor setting of the sewing machine 2.

[0029] As the defect cause related to the second item, an abnormality of the seam formed on the sewing target 100 is exemplified. As the abnormality of the seam, meandering of the seam, non-existence of the seam, and deviation of the seam from the sewing target 100 are exemplified. Further, as the defect cause related to the second item, misidentification of the sewing target 100 or misidentification of the thread is exemplified. The defect related to the second item is a defect caused by the operator, such as insufficient skill or carelessness of the operator.

[0030] As the defect cause related to the third item, a defect of the sewing target 100 itself is exemplified. As the defect of the sewing target 100 itself, scratches, color unevenness, and stains existing on the sewing target 100 are exemplified. The defect related to the third item is a defect caused by the sewing target 100.

[0031] The input data acquisition unit 62 acquires the input data generated by the input device 14 of the information terminal 11 from the information terminal 11. When there is a defect in the sewing target 100, the inspector operates the input device 14 to input that there is a defect in the sewing target 100. The inspector operates the input device 14 to input the cause of the defect. The inspector operates the input device 14 to input the defective location of the sewing target 100. The input data acquisition unit 62 acquires from the information terminal 11 the input data indicating that there is a defect in the sewing target 100. The input data acquisition unit 62 acquires from the information terminal 11 the input data indicating the cause of the defect in the sewing target 100. The input data acquisition unit 62 acquires from the information terminal 11 the input data indicating the defective location of the sewing target 100.

[0032] Based on the input data acquired by the input data acquisition unit 62, the processing unit 63 calculates the defect rate for each of a plurality of evaluation items related to sewing. The evaluation items include at least one of the product number of the sewing target 100, the sewing process, the sewing time (sewing time, sewing time zone), and the operator.

[0033] Also, based on the input data indicating the cause of the defect acquired by the input data acquisition unit 62, the processing unit 63 classifies the input data indicating the cause of the defect for each of a plurality of defect items.

[0034] Also, based on the input data indicating the defective location acquired by the input data acquisition unit 62, the processing unit 63 counts the number of defects at the same part of a plurality of sewing targets of the same design.

[0035] The output unit 64 outputs the defect rate calculated by the processing unit 63 to the display device 4. The output unit 64 causes the display device 4 to display the input data indicating the cause of the defect classified by the processing unit 63. Based on the input data indicating the defective location acquired by the input data acquisition unit 62, the output unit 64 causes the display device 4 to display the defective location. Note that the output unit 64 may output the input data indicating the cause of the defect classified by the processing unit 63 to the defect cause storage unit 61 for storage.

[0036] [Sewing management method] Next, a sewing management method according to an embodiment will be described. As described above, in a sewing factory, each of a plurality of workers sews a plurality of sewing objects 100 using a plurality of sewing machines 2. In the sewing factory, there may be a case where each of a plurality of sewing objects 100 of the same design is sequentially sewn using the sewing machine 2. In the following description, an example in which each of a plurality of sewing objects 100 of the same design is sequentially inspected in the inspection process will be described. Also, in the following description, it is assumed that the sewing object 100 is a fabric for manufacturing a T-shirt.

[0037] FIG. 4 is a diagram showing an information terminal 11 in the inspection process according to the embodiment. In the inspection process, the inspector inspects the sewing object 100 using the information terminal 11. When there is a defect in the sewing object 100, the inspector operates the input device 14 to input that there is a defect in the sewing object 100. As shown in FIG. 4, a first display screen for inputting the defective part of the sewing object 100 is displayed on the display device 13 of the information terminal 11. The first display screen includes an image of the sewing object 100. The inspector operates the input device 14 to input the defective part of the sewing object 100. The input device 14 includes a touch panel. For example, when there is a defect in the shoulder part of the sewing object 100, the inspector taps the shoulder part of the image of the sewing object 100 displayed on the display device 13.

[0038] After the defective part of the sewing object 100 is input, the display screen of the display device 13 transitions from the first display screen for inputting the defective part to a second display screen for inputting the cause of the defect. The inspector operates the input device 14 to input the cause of the defect of the sewing object 100. A plurality of defect items are displayed on the display device 13. As shown in FIG. 4, on the display device 13, characters indicating the first item "sewing machine", the second item "worker", and the third item "sewing object" are displayed.

[0039] When the inspector determines that at least one of "thread skipping", "thread breakage", and "lampshade" exists in the shoulder portion of the sewing target 100, it is determined that the cause of the defect is the sewing machine, and the inspector taps "sewing machine" on the display device 13. As a result, input data indicating that the cause of the defect is the sewing machine 2 is transmitted from the terminal controller 12 to the management controller 6.

[0040] When the inspector determines that at least one of "zigzag of the seam", "absence of the seam", and "deviation of the seam from the sewing target 100" exists in the shoulder portion of the sewing target 100, it is determined that the cause of the defect is the operator, and the inspector taps "operator" on the display device 13. As a result, input data indicating that the cause of the defect is the operator is transmitted from the terminal controller 12 to the management controller 6.

[0041] When the inspector determines that at least one of "damage to the sewing target 100", "color unevenness", and "stains" exists in the shoulder portion of the sewing target 100, it is determined that the cause of the defect is the sewing target, and the inspector taps "sewing target" on the display device 13. As a result, input data indicating that the cause of the defect is the sewing target is transmitted from the terminal controller 12 to the management controller 6.

[0042] FIG. 5 is a flowchart showing the inspection process according to the embodiment. The inspector operates the input device 14 to input the product number of the sewing target 100 to be inspected, the sewing process through which the sewing target 100 has passed, the sewing time (sewing time, sewing time zone) during which the sewing target 100 has been sewn, and the operator who has sewn the sewing target 100. When the inspection process is carried out after the first process, the sewing process through which the sewing target 100 has passed is the first process. When the inspection process is carried out after the second process or the third process, the sewing process through which the sewing target 100 has passed is the second process or the third process. Input data indicating each of the product number, sewing process, sewing time, and operator of the sewing target 100 is transmitted from the terminal controller 12 to the management controller 6. The input data acquisition unit 62 acquires input data indicating each of the product number, sewing process, sewing time, and operator of the sewing target 100 (step S1).

[0043] Next, as described with reference to FIG. 4, the operator inputs the defective portion of the sewing target 100. The input data indicating the defective portion of the sewing target 100 is transmitted from the terminal controller 12 to the management controller 6. The input data acquisition unit 62 acquires the input data indicating the defective portion of the sewing target 100 (step S2).

[0044] In the embodiment, the input data acquisition unit 62 acquires, from the input device 14, the input data indicating the defective portion of each of the plurality of sewing targets 100 of the same design sewn by the operator using the sewing machine 2. The processing unit 63 counts the number of defects at the same part of the plurality of sewing targets 100 based on the input data indicating the defective portion (step S3).

[0045] Next, as described with reference to FIG. 4, the operator inputs the cause of the defect of the sewing target 100. The input data indicating the cause of the defect of the sewing target 100 is transmitted from the terminal controller 12 to the management controller 6. The input data acquisition unit 62 acquires the input data indicating the cause of the defect of the sewing target 100 (step S4).

[0046] The processing unit 63 classifies the input data indicating the cause of the defect for each defective item stored in the defective cause storage unit 61 (step S5).

[0047] The processing unit 63 calculates the defect rate for each of the plurality of evaluation items related to sewing based on the input data indicating the defective portion (step S6).

[0048] The output unit 64 outputs the defective portion acquired in step S2, the number of defects counted in step S3, the cause of the defect classified in step S5, and the defect rate calculated in step S6 to the display device 4 (step S7).

[0049] FIG. 6 is a diagram showing an example of a display device 4 that displays defective portions and the number of defects according to an embodiment. As shown in FIG. 6, an image of the sewing target 100 is displayed on the display device 4. The output unit 64 superimposes a first symbol indicating a defective portion on the image of the sewing target 100 and causes it to be displayed on the display device. In the example shown in FIG. 6, the first symbol is a circular mark. FIG. 6 shows an example in which defective portions are found in each of the shoulder portion, side portion, and hem portion of the sewing target 100.

[0050] Further, the output unit 64 superimposes a second symbol indicating the number of defects in the same part on the image of the sewing target 100 and causes it to be displayed on the display device 4. In the example shown in FIG. 6, the second symbol is numerical data superimposed on the first symbol. FIG. 6 shows an example in which the number of defects in the shoulder portion of the sewing target 100 is "1", the number of defects in the side portion is "3", and the number of defects in the hem portion is "4".

[0051] FIG. 7 is a diagram showing an example of a display device 4 that displays correlation data between defective portions, defective causes, and evaluation items related to sewing according to an embodiment. As shown in FIG. 7, the output unit 64 causes the display device 4 to display input data indicating defective causes for each of a plurality of defective items. For example, when input data indicating that the defective cause is the sewing machine 2 is transmitted from the terminal controller 12 to the management controller 6, the output unit 64 causes the display device 4 to display that the defective cause is the sewing machine 2. Also, as shown in FIG. 7, the output unit 64 causes the display device 4 to display correlation data between defective portions, defective causes, and evaluation items related to sewing. As described above, the evaluation items include at least one of the product number of the sewing target 100, the sewing process, the sewing time, and the operator.

[0052] FIG. 8 is a diagram showing an example of a display device 4 that displays evaluation items and defect rates according to an embodiment. The processing unit 63 calculates a defect rate for each evaluation item related to sewing based on input data indicating defects of each of a plurality of sewing targets 100 sewn by a plurality of workers using a plurality of sewing machines 2. The output unit 64 causes the display device 4 to display the relationship between the evaluation items and the defect rates. FIG. 8 is a diagram showing the relationship between the sewing time (sewing time zone) and the defect rate. Note that the output unit 64 may output the relationship between a plurality of product numbers and the defect rates for each of the plurality of product numbers, or may output the relationship between a plurality of sewing processes and the defect rates for each of the plurality of sewing processes, or may output the relationship between a plurality of workers and the defect rates for each of the plurality of workers.

[0053] [Effect] As described above, according to the embodiment, the sewing management system 1 includes a defect cause storage unit 61 that stores a plurality of defect items that are items of defect causes of the sewing target 100 sewn by a worker using the sewing machine 2, an input data acquisition unit 62 that acquires input data indicating the defect cause from the input device 14, a processing unit 63 that classifies the input data indicating the defect cause for each defect item, and an output unit 64 that outputs the input data indicating the classified defect cause.

[0054] According to the embodiment, after the defect cause discovered in the inspection process is specified by the inspector, the defect cause specified by the inspector is classified into predetermined defect items. Since the defect causes are classified, for example, the administrator can analyze the defect cause of the sewing target based on the classified defect causes. The defect causes classified into a plurality of defect items are utilized as useful data when analyzing the defect cause of the sewing target.

[0055] The input data related to the defect cause is displayed on the display device 4 for each of the plurality of defect items. The administrator can analyze the defect cause of the sewing target based on the defect causes displayed for each of the plurality of defect items.

[0056] The defective items include a first item indicating that the sewing machine 2 is the cause of the defect, a second item indicating that the operator is the cause of the defect, and a third item indicating that the sewing object 100 is the cause of the defect. Thereby, the administrator can efficiently identify the cause of the defect.

[0057] [Another Embodiment] In the above-described embodiment, the sewing machine controller 8 is configured to transmit the operation data of the sewing machine 2 to the management controller 6. The processing unit 63 may collect the operation data of each of the plurality of sewing machines 2. As described above, the operation data of the sewing machine 2 includes the operating conditions of the sewing machine 2 and the operation history of the sewing machine 2. The output unit 64 may output and display, on the display device 4, the input data indicating the cause of the defect classified by the processing unit 63 in association with the operation data of the sewing machine 2. As described with reference to FIG. 7, the display data associating that the cause of the defect is the operating condition (for example, the pressing pressure) of the sewing machine 2 may be displayed on the display device 4, or the display data associating that the cause of the defect is the operation history of the sewing machine 2 (for example, the type of the sewing object or the operator who operated the sewing machine 2) may be displayed on the display device 4. By outputting the classified cause of the defect in association with the operating condition of the sewing machine 2, for example, the administrator can analyze the cause of the defect of the sewing object. Similarly, by outputting the classified cause of the defect in association with the operation history of the sewing machine 2, for example, the administrator can analyze the cause of the defect of the sewing object. Note that the output unit 64 may output and store, in the defect cause storage unit 61, the input data indicating the cause of the defect classified by the processing unit 63 in association with the operation data of the sewing machine 2.

Description of Reference Numerals

[0058] 1... Sewing management system, 2... Sewing machine, 2A... First sewing machine, 2B... Second sewing machine, 2C... Third sewing machine, 3... Management device, 4... Display device, 5... Input device, 6... Management controller, 7... Operation panel, 8... Sewing machine controller, 11... Information terminal, 12... Terminal controller, 13... Display device, 14... Input device, 61... Defect cause memory unit, Input data acquisition unit 62... Input data acquisition unit, 63... Processing unit, 64... Output unit, 100... Sewing target, 1000... Computer system, 1001... Processor, 1002... Main memory, 1003... Storage, 1004... Interface.

Claims

1. A defect cause storage unit that stores a plurality of defect items, which are items of defect causes of sewing targets sewn by an operator using a sewing machine; An input data acquisition unit that acquires input data indicating the defect cause from an input device; A processing unit that classifies the input data for each of the defect items; An output unit that outputs the classified input data, A sewing management system.

2. The output unit causes the input data to be displayed on a display device for each of the plurality of defect items or to be stored in the defect cause storage unit. The sewing management system according to Claim 1.

3. The defect items include a first item indicating that the sewing machine is the defect cause, a second item indicating that the operator is the defect cause, and a third item indicating that the sewing target is the defect cause. The sewing management system according to Claim 1.

4. The input data acquisition unit collects operation data of the sewing machine, The output unit outputs the classified input data in association with the operation data. The sewing management system according to Claim 1.

5. The output unit causes the input data to be displayed on a display device in association with the operation data or to be stored in the defect cause storage unit. The sewing management system according to Claim 4.

6. The operation data includes operating conditions of the sewing machine and an operation history of the sewing machine. The sewing management system according to Claim 4.

7. The operating conditions of the sewing machine include at least one of stitch length, stitch pitch, stitch pattern, feed speed of the sewing target, number of stitches, thread tension, and pressing pressure of the sewing target. The sewing management system according to Claim 6.

8. The operation history of the sewing machine includes at least one of the operation date and time of the sewing machine, the continuous operation time of the sewing machine, the cumulative operation time of the sewing machine, the type of sewing target sewn by the sewing machine, the number of stitches during sewing, error information generated in the sewing machine, and the operator who operated the sewing machine. The sewing management system according to Claim 6.

9. Storing a plurality of defect items, which are items of defect causes of sewing targets sewn by an operator using a sewing machine; Acquiring input data indicating the defect cause from an input device; Classifying the input data for each of the defect items; Outputting the classified input data, A sewing management method.

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