Sewing management system and sewing management method

Abstract

The sewing management system (1) includes a normal operation time calculating section (61) that calculates a normal operation time, which indicates a time required for a worker to perform normal operation of sewing a sewing object (100) using a sewing machine (2); a correction operation time calculating section (62) that calculates a correction operation time, which indicates a time required for the worker to perform correction operation of the sewing object (100) after the normal operation using the sewing machine; and an output section (64) that outputs the normal operation time and the correction operation time.

Description

Technical Field

[0001] This invention relates to a sewing management system and a sewing management method. Background Technology

[0002] In the technical field of sewing management systems, sewing management systems such as those disclosed in Patent Document 1 are known.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2020-168056 Summary of the Invention

[0004] Sewn items produced during the sewing process are inspected during the inspection process. Sewn items found to have problems during the inspection process are returned to the sewing process for correction. The time required for correction work needs to be determined in order to properly formulate production plans for sewn products.

[0005] The purpose of this invention is to formulate a suitable production plan for sewn products.

[0006] The sewing management system of the present invention includes: a normal operation time calculation unit that calculates the normal operation time, which represents the time required for a worker to sew an object using a sewing machine during normal operation; a correction operation time calculation unit that calculates the correction operation time, which represents the time required for a worker to correct the sewn object after normal operation using a sewing machine; and an output unit that outputs the normal operation time and the correction operation time.

[0007] The effects of the invention

[0008] According to the sewing management system of the present invention, it is possible to appropriately formulate production plans for sewn products. Attached Figure Description

[0009] Figure 1 This is a schematic diagram illustrating the sewing management system involved in the implementation method.

[0010] Figure 2 This is a hardware structure diagram illustrating the management controller involved in the implementation method.

[0011] Figure 3 This is a functional block diagram illustrating the management device and sewing machine involved in the implementation method.

[0012] Figure 4 This is a flowchart illustrating the sewing management method involved in the implementation method.

[0013] Figure 5 This is a diagram illustrating an example of display data displayed in a display device according to the embodiment. Detailed Implementation

[0014] The embodiments of the present invention will now be described with reference to the accompanying drawings, but the present invention is not limited to these embodiments. The structural elements of the embodiments described below can be appropriately combined. In addition, sometimes some structural elements are not used.

[0015] [Sewing Management System]

[0016] Figure 1 This diagram schematically illustrates 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, in which a sewing machine 2 is used to sew a sewing object 100; and an inspection process, in which the sewing object 100 produced in the sewing process is inspected. The sewing machine 2 is an industrial sewing machine. Sewn products are produced in a production line that includes the sewing machines 2. Multiple sewing machines 2 are installed on the production line. The production line is located in a sewing factory. The sewing machines 2 operate in the sewing factory. Sewn products are produced by sewing the sewing object 100 using the sewing machines 2. In this embodiment, the management device 3 is installed in the sewing factory. Alternatively, the management device 3 may be installed outside the sewing factory.

[0017] In the sewing process, the object to be sewn 100 is sewn by sewing machine 2, thereby producing a sewn product. Fabric is shown as the object to be sewn. Garment is shown as the sewn product.

[0018] In a sewing factory, multiple types of sewing machines 2 are provided, each corresponding to a specific purpose. In the sewing factory, multiple types of sewing machines 2 are provided so that they can each handle multiple sewing processes for producing sewn products. Examples of types of sewing machines 2 include a flat sewing machine for sewing garment bodies, a button sewing machine for sewing buttons onto garment bodies, and a pocket sewing machine for sewing pockets onto garment bodies. Multiple types and numerous industrial sewing machines 2 are provided in a single sewing factory 1. Furthermore, for the sake of simplicity, in… Figure 1 Three sewing machines 2 are shown. Sewing machine 2A is used in the first process of producing sewn products. Sewing machine 2B is used in the second process of producing sewn products. Sewing machine 2C is used in the third process of producing sewn products. Furthermore, multiple sewing machines 2 of one type can be installed in a sewing factory.

[0019] In the sewing factory, managers, operators, and inspectors work. The manager oversees the operators, inspectors, and sewing machines 2. Operators use sewing machines 2 to sew object 100 during the sewing process. Inspectors inspect the sewn object 100 produced by sewing machines 2 during the inspection process. Managers, operators, and inspectors can each be considered users of sewing machines 2. There can be one or more managers. There can be one or more operators. For example, one operator can operate multiple sewing machines 2. There can be one or more inspectors.

[0020] 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 (LCD) or an organic EL display. The input device 5 is operated by the manager, thereby generating input data. Alternatively, the input device 5 can also be operated by an operator. The input device 5 includes a touch panel (touch sensor) configured on the display screen of the display device 4. Furthermore, the input device 5 can also 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 main memory for storing computer programs executable by the processor.

[0021] The sewing machine 2 includes an operation panel 7, a sewing machine controller 8, an identification device 9, and a wireless communication device 10. The operation panel 7 is operated by the operator, thereby generating operation data. The operation panel 7 includes a touch panel (touch sensor) configured to display a screen on the monitor. The sewing machine controller 8 includes a computer system. The sewing machine controller 8 has at least one processor and a main memory for storing computer programs executable by the processor.

[0022] The identification device 9 identifies the identification tags (101, 102) attached to the sewing object 100. The identification device 9 outputs identification data indicating the identification result of the identification tags (101, 102). The identification tags (101, 102) are attached to the sewing object 100 for identification purposes. The identification tags (101, 102) can be attached to and detached from the sewing object 100. Examples of identification tags (101, 102) include RFID tags or QR code tags printed with QR codes. Examples of identification devices 9 include RFID readers or QR code readers.

[0023] The inspector inspects the sewn object 100 during the inspection process. The inspection of the sewn object 100 includes: intermediate inspection, which examines the sewn object 100 after completing a portion of the sewing process; and final inspection, which examines the sewn object after completing all the sewing processes. The inspector holds an information terminal 11. An example of an information terminal 11 is a tablet terminal or a smartphone. The information terminal 11 includes a display, an input device such as a touch panel, and a computer system.

[0024] The management device 3 is shared by multiple 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 terminal 11 separately. The management controller 6 of the management device 3 communicates with the sewing machine controller 8 of the sewing machine 2 and the information terminal 11 separately. The management controller 6, the sewing machine controller 8, and the information terminal 11 communicate wirelessly. The management controller 6, the sewing machine controller 8, and the information terminal 11 communicate wirelessly via a local area network (LAN). Wifi (registered trademark) is an example of a wireless LAN. In addition, the management controller 6, the sewing machine controller 8, and the information terminal 11 can also communicate wirelessly via a personal area network (PAN). Bluetooth (registered trademark) is an example of a wireless PAN.

[0025] The management controller 6 sends control commands to the sewing machine controller 8 of the sewing machine 2 based on the input data generated by operating the input device 5.

[0026] The sewing machine controller 8 transmits the operating data of the sewing machine 2 to the management controller 6 via the wireless communication unit 10. The operating data of the sewing machine 2 includes the operating conditions of the sewing machine 2. These operating conditions include stitch length, stitch spacing, stitch pattern, feed speed of the workpiece, number of stitches, thread tension, and presser foot pressure. The sewing machine controller 8 monitors the operating conditions of the sewing machine 2. Sensors for detecting the operating conditions of the sewing machine 2 are installed in the sewing machine 2. Examples of these sensors include a tension sensor for detecting thread tension and a presser foot pressure sensor for detecting presser foot pressure. The sewing machine controller 8 monitors the operating conditions of the sewing machine 2 by acquiring the sensor detection data. Furthermore, the sewing machine 2 has a sewing machine motor for actuating the needle bar and take-up lever. The sewing machine controller 8 monitors the operating conditions of the sewing machine 2 by acquiring the drive signal of the sewing machine motor. Additionally, the operating data of the sewing machine 2 represents the operating history of the sewing machine 2. The operation history of sewing machine 2 includes the date and time of operation of sewing machine 2, continuous operation time of sewing machine 2, cumulative operation time of sewing machine 2, type of sewing object sewn by sewing machine 2, number of stitches during sewing, error messages that occurred on sewing machine 2, and at least one operator who operated sewing machine 2.

[0027] The sewing machine controller 8 sends the identification data representing the identification results of the identification tags (101, 102) obtained by the identification device 9 to the management controller 6.

[0028] The management controller 6 collects the operating data of each of the multiple sewing machines 2. The management controller 6 then displays the operating data of each of the multiple sewing machines 2 on the display device 4.

[0029] The inspector operates the input device of the information terminal 11 to input the inspection results of the sewn object 100 into the information terminal 11. The information terminal 11 sends the inspection data representing the inspection results of the sewn object 100 to the management controller 6.

[0030] The management controller 6 sends guidance data indicating the inspection items and methods for the sewn object 100 to the information terminal 11. The guidance data is displayed on the screen of the information terminal 11. The inspector checks the sewn object 100 while confirming the guidance data displayed on the screen.

[0031] [Computer System]

[0032] Figure 2This is a hardware structure diagram illustrating the management controller 6 according to the implementation method. The management controller 6 includes a computer system 1000. The computer system 1000 has: a processor 1001 such as a CPU (Central Processing Unit); a main memory 1002, which includes non-volatile memory such as ROM (Read Only Memory) and volatile memory such as RAM (Random Access Memory); a storage device 1003; and an interface 1004 including input / output circuitry. The functions of the management controller 6 are stored as a computer program in the storage device 1003. The processor 1001 reads the computer program from the storage device 1003 and expands it into the main memory 1002, and executes the processing according to the computer program. In addition, the computer program can also be transmitted to the computer system 1000 via a network.

[0033] Similarly, the sewing machine controller 8 and the information terminal 11 each include a computer system with a processor, main memory, storage and interface.

[0034] [Management device and sewing machine]

[0035] Figure 3 This is a functional block diagram illustrating the management device 3 and sewing machine 2 involved in the implementation method. For example... Figure 3 As shown, the management controller 6 has a normal operation time calculation unit 61, a corrected operation time calculation unit 62, an operation data acquisition unit 63, and an output unit 64.

[0036] Normal operation time calculation unit 61 calculates the normal operation time, which represents the time required for an operator to sew the object 100 using sewing machine 2 during normal operation. Normal operation time calculation unit 61 calculates the normal operation time spent by each of the multiple sewing machines 2. Normal operation time is equivalent to so-called standard time. Normal operation time (standard time) refers to the time spent performing work under optimal methods and conditions. Standard time includes operation time and surplus time. Operation time refers to the time spent by an operator with standard skill level performing work in a standard work sequence, method, and conditions. Surplus time refers to additional time that occurs irregularly or accidentally during operation and time used to compensate for production reductions caused by other reasons. Normal operation time can also be the cumulative value of normal operation time associated with one sewing machine 2.

[0037] The correction operation time calculation unit 62 calculates the correction operation time, which represents the time required for the operator to perform correction operations on the sewn object 100 after normal operation using the sewing machine 2. When multiple sewing machines 2 are performing correction operations, the correction operation time calculation unit 62 calculates the correction operation time spent by each of the multiple sewing machines 2. The correction operation time is equivalent to the standard time required for correction. The correction operation time can also be the cumulative value of the correction operation time related to one sewing machine 2.

[0038] The operation data acquisition unit 63 acquires operation data sent from the sewing machine controller 8 of the sewing machine 2. The operation data acquisition unit 63 acquires operation data for each of the multiple sewing machines 2.

[0039] The output unit 64 outputs the normal operation time calculated in the normal operation time calculation unit 61 and the corrected operation time calculated in the corrected operation time calculation unit 62. In this embodiment, the output unit 64 outputs the normal operation time and the corrected operation time to the display device 4.

[0040] [Calculation of typical work time]

[0041] When performing routine work on the sewing object 100, an identification label 101 is affixed to the sewing object 100. The identification label 101 is affixed to the sewing object 100 for the purpose of identifying the sewing object 100 to which routine work is performed. In the following description, the identification label 101 affixed to the sewing object 100 for the purpose of identifying the sewing object 100 to which routine work is performed will be appropriately referred to as the routine label 101.

[0042] When starting a normal operation on the sewing object 100, the normal label 101 is identified by the identification device 9. The operator operates the start button on the operation panel 7 to initiate a normal operation on the sewing object 100, causing the identification device 9 to read the normal label 101 attached to the sewing object 100. After the identification device 9 reads the normal label 101, the operator begins the normal operation. The operator performs a changeover adjustment for sewing the sewing object 100, or sews the sewing object 100 using the sewing machine 2. After the normal operation is completed, the operator operates the end button on the operation panel 7, causing the identification device 9 to read the normal label 101 attached to the sewing object 100 again.

[0043] The sewing machine controller 8 sends operation data generated by operating the operation panel 7 and first identification data representing the normal label 101 obtained by the identification device 9 to the management controller 6. The management controller 8 sends to the management controller 6 the operation data generated by operating the start button on the operation panel 7, the first identification data of the normal label 101 read by the identification device 9 at the start of a normal operation, the operation data generated by operating the end button on the operation panel 7, and the first identification data of the normal label 101 read by the identification device 9 at the end of a normal operation.

[0044] The normal operation time calculation unit 61 calculates the normal operation time based on the first identification data when the identification device 9 identifies the normal label 101. The normal operation time calculation unit 61 can calculate the normal operation time based on the first identification data of the normal label 101 read by the identification device 9 at the start of the normal operation and the first identification data of the normal label 101 read by the identification device 9 at the end of the normal operation. That is, the normal operation time calculation unit 61 can calculate the normal operation time based on the difference between the time when the normal label 101 is read by the identification device 9 when the start button of the operation panel 7 is pressed and the time when the normal label 101 is read by the identification device 9 when the end button of the operation panel 7 is pressed.

[0045] The normal operating time is calculated for the first process (first sewing machine 2A), the second process (second sewing machine 2B), and the third process (third sewing machine 2C).

[0046] Furthermore, the normal operation time calculation unit 61 can also calculate the normal operation time based on the operation data obtained by the operation data acquisition unit 63. As described above, 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 the drive time of the sewing machine motor. The normal operation time calculation unit 61 can also calculate the drive time of the sewing machine motor during normal operation as the normal operation time.

[0047] [Calculation of correction time]

[0048] Normally, the sewn object 100 is inspected by an inspector during the inspection process after the sewing work is completed. If a problem is found during the inspection process, the sewn object 100 is returned to the sewing process for correction. When correction is performed on the sewn object 100, an identification tag 102 is affixed to it. The sewn object 100 with the identification tag 102 affixed is returned to the sewing process. The identification tag 102 is affixed to the sewn object 100 for the purpose of identifying the sewn object 100 that has undergone correction. In the following description, the identification tag 102 affixed to the sewn object 100 for the purpose of identifying the sewn object 100 that has undergone correction will be appropriately referred to as a correction tag 102.

[0049] For example, if a problem is found caused by the operation of the first process, the sewn object 100 with the correction label 102 is returned to the first process (first sewing machine 2A). If a problem is found caused by the operation of the second or third process, the sewn object 100 with the correction label 102 is returned to the second process (second sewing machine 2B) or the third process (third sewing machine 2C). Figure 1 An example is shown where the sewn object 100 with the correction label 102 attached is sent back to the second process (second sewing machine 2B).

[0050] When correction work begins on the sewing object 100, the correction label 102 is recognized by the recognition device 9. The operator operates the start button on the operation panel 7 to initiate correction work on the sewing object 100, causing the recognition device 9 to read the correction label 102 attached to the sewing object 100. After the recognition device 9 reads the correction label 102, the operator begins the correction work. The operator performs a changeover adjustment for correcting the sewing object 100, or uses the sewing machine 2 to correct the sewing object 100. After the correction work is completed, the operator operates the end button on the operation panel 7, causing the recognition device 9 to read the correction label 102 attached to the sewing object 100 again.

[0051] The sewing machine controller 8 sends operation data generated by operating the control panel 7 and second identification data representing the correction label 102 obtained by the identification device 9 to the management controller 6. The management controller 8 sends to the management controller 6 the operation data generated by operating the start button on the control panel 7, the second identification data of the correction label 102 read by the identification device 9 at the start of the correction operation, the operation data generated by operating the end button on the control panel 7, and the second identification data of the correction label 102 read by the identification device 9 at the end of the correction operation.

[0052] The correction operation time calculation unit 62 calculates the correction operation time based on the second identification data when the correction label 102 is identified by the identification device 9. The correction operation time calculation unit 62 can calculate the correction operation time based on the second identification data of the correction label 102 read by the identification device 9 at the start of the correction operation and the second identification data of the correction label 102 read by the identification device 9 at the end of the correction operation. That is, the correction operation time calculation unit 62 can calculate the correction operation time based on the difference between the time when the correction label 102 is read by the identification device 9 when the start button of the operation panel 7 is pressed and the time when the correction label 102 is read by the identification device 9 when the end button of the operation panel 7 is pressed.

[0053] When there are multiple sewing processes (sewing machine 2) that perform correction operations, the correction operation time is calculated for each of the multiple sewing processes (sewing machine 2).

[0054] Furthermore, the correction operation time calculation unit 62 can also calculate the correction operation time based on the operation data obtained by the operation data acquisition unit 63. As described above, 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 the drive time of the sewing machine motor. The correction operation time calculation unit 62 can also calculate the drive time of the sewing machine motor during the correction operation as the correction operation time.

[0055] [Sewing Management Methods]

[0056] Figure 4 This is a flowchart illustrating the sewing management method according to the embodiment. The normal operation time calculation unit 61 determines whether the first identification data of the normal tag 101 has been received (step S1). If it is determined in step S1 that the first identification data has been received (step S1: Yes), the normal operation time calculation unit 61 calculates the normal operation time based on the first identification data (step S2). The first identification data is sent from the sewing machine controller 8 to the management controller 6 at the start of the normal operation and at the end of the normal operation, respectively. The normal operation time calculation unit 61 can calculate the normal operation time based on the first identification data received at the start of the normal operation and the first identification data received at the end of the normal operation.

[0057] The correction operation time calculation unit 62 determines whether the second identification data of the correction tag 102 has been received (step S3). If it is determined in step S3 that the second identification data has been received (step S3: Yes), the correction operation time calculation unit 62 calculates the correction operation time based on the second identification data (step S4). The second identification data is sent from the sewing machine controller 8 to the management controller 6 at the start of the correction operation and at the end of the correction operation, respectively. The correction operation time calculation unit 62 can calculate the correction operation time based on the second identification data received at the start of the correction operation and the second identification data received at the end of the correction operation.

[0058] The output unit 64 generates output data based on the normal operation time calculated in step S2 and the corrected operation time calculated in step S4 (step S5). The output unit 64 outputs the output data to the display device 4 (step S6). In this embodiment, the output data packet contains display data to be displayed on the display device 4.

[0059] Furthermore, if it is determined in step S1 that no first identification data has been received (step S1: No), output data is generated without calculating the normal operation time. If it is determined in step S3 that no second identification data has been received (step S3: No), output data is generated without calculating the corrected operation time.

[0060] Figure 5 This is a diagram illustrating an example of display data displayed in the display device 4 according to the embodiment. For example... Figure 5 As shown, the output unit 64 enables the display device 4 to display the normal operation time and the correction operation time. Figure 5 In the example shown, the output unit 64 causes the display device 4 to display a bar graph showing the relationship between normal operation time and corrected operation time. The manager can identify the relationship between normal operation time and corrected operation time based on the data displayed on the display device 4.

[0061] The output unit 64 enables the display device 4 to display the normal operation time and the correction operation time for each of the multiple sewing machines 2. Based on the display data shown on the display device 4, the manager can identify the relationship between the normal operation time and the correction operation time for each of the multiple sewing machines 2.

[0062] In addition, the output unit 64 can also enable the display device 4 to display the normal working time and the modified working time for each of the multiple operators.

[0063] [Effect]

[0064] As described above, according to the embodiment, the sewing management system 1 includes: a normal operation time calculation unit 61, which calculates the normal operation time, representing the time required for an operator to sew the sewing object 100 using the sewing machine 2; a correction operation time calculation unit 62, which calculates the correction operation time, representing the time required for an operator to correct the sewing object 100 after the normal operation using the sewing machine 2; and an output unit 64, which outputs the normal operation time and the correction operation time. Since not only the time required for normal operations is calculated, but also the time required for correction operations, the manager can identify the overall operation time, including both normal operation time and correction operation time. The manager can also identify the proportion of correction operation time in the overall operation time. Therefore, the manager can appropriately formulate a production plan for the sewn products.

[0065] A standard label 101 is affixed to the sewing object 100 for identification of the object being sewn during routine operations. A correction label 102 is affixed to the sewing object 100 for identification of the object being sewn during correction operations. The sewing machine 2 has an identification device 9 for identifying the standard label 101 and the correction label 102. The routine operation time calculation unit 61 can calculate the routine operation time based on the first identification data when the standard label 101 is identified by the identification device 9. The correction operation time calculation unit 62 can calculate the correction operation time based on the second identification data when the correction label 102 is identified by the identification device 9. In addition, the standard label 101 and the correction label 102 each contain product number data of the sewing object 100, and display data indicating the relationship between the product number, the routine operation time, and the correction operation time is displayed on the display device 4, thereby allowing the manager to manage the routine operation time and the correction operation time for each product number.

[0066] Multiple sewing machines 2 are provided. The output unit 64 displays the relationship between normal operation time and correction operation time for each of the multiple sewing machines 2 on the display device 4. The manager can manage the normal operation time and correction operation time for each sewing machine 2. In addition, by displaying the relationship between normal operation time and correction operation time separately for each operator on the display device 4, the manager can manage the normal operation time and correction operation time for each operator. The manager can determine the operator's ability or decide the operator's payment based on the operator, the relationship between normal operation time and correction operation time. The manager may also determine that the shorter the correction operation time, the higher the operator's ability. The manager may also increase the operator's payment for the shorter the correction operation time.

[0067] [Other Implementation Methods]

[0068] In the above embodiment, the correction operation time calculation unit 62 can also calculate the frequency of correction operations within a specified period (e.g., 1 day or 1 week). The correction operation time calculation unit 62 can also calculate the frequency of correction operations for each sewing machine 2 or for each operator.

[0069] In the above embodiment, when a normal operation or correction operation begins, the start button on the operation panel 7 is operated, and the identification tags (101, 102) are read by the identification device 9. When a normal operation or correction operation ends, the end button on the operation panel 7 is operated, and the identification tags (101, 102) are read by the identification device 9. As long as the management controller 6 can identify the start and end of the normal operation and correction operation, the operation panel 7 may not need to be operated.

[0070] The present invention includes the following methods. (1)

[0072] A sewing management system, which has: The normal operation time calculation department calculates the normal operation time, which represents the time required for an operator to sew an object using a sewing machine during a normal operation. A correction work time calculation unit calculates the correction work time, which represents the time required for the operator to perform a correction work on the sewn object after the usual work using the sewing machine; and The output unit outputs the normal operation time and the modified operation time. (2)

[0074] According to the sewing management system described in (1), in which, A standard label is attached to the sewing object to identify the object being sewn during the usual operation. A correction label, used to identify the sewn object to which the correction operation is performed, is affixed to the sewn object. The sewing machine has an identification device for recognizing both the standard label and the correction label. The normal operation time calculation unit calculates the normal operation time based on the first identification data when the identification device identifies the normal label. The correction operation time calculation unit calculates the correction operation time based on the second identification data when the identification device identifies the correction tag. (3)

[0076] According to the sewing management system described in (1), in which, Multiple sewing machines are provided. The output section enables the display device to display the normal operating time and the modified operating time for each of the multiple sewing machines. (4)

[0078] A sewing management method comprising the following steps: The typical operation time is calculated, which represents the time required for an operator to sew an object using a sewing machine. The correction operation time is calculated, which represents the time required for the operator to perform a correction operation using the sewing machine to correct the sewn object after the usual operation; and Output the normal operation time and the corrected operation time.

[0079] This application is based on Japanese Patent Application No. 2023-186315, filed on October 31, 2023, the contents of which are incorporated herein by reference.

Claims

1. A sewing management system, comprising: The normal operation time calculation department calculates the normal operation time, which represents the time required for an operator to sew an object using a sewing machine during a normal operation. The correction operation time calculation unit calculates the correction operation time, which represents the time required for the operator to perform a correction operation on the sewn object after the normal operation using the sewing machine; as well as The output unit outputs the normal operation time and the modified operation time.

2. The sewing management system according to claim 1, wherein, A standard label is attached to the sewing object to identify the object being sewn during the usual operation. A correction label, used to identify the sewn object to which the correction operation is performed, is affixed to the sewn object. The sewing machine has an identification device for recognizing both the standard label and the correction label. The normal operation time calculation unit calculates the normal operation time based on the first identification data when the identification device identifies the normal label. The correction operation time calculation unit calculates the correction operation time based on the second identification data when the identification device identifies the correction tag.

3. The sewing management system according to claim 1, wherein, Multiple sewing machines are provided. The output section enables the display device to display the normal operating time and the modified operating time for each of the multiple sewing machines.

4. A sewing management method, comprising the following steps: The typical operation time is calculated, which represents the time required for an operator to sew an object using a sewing machine. The correction operation time is calculated, which represents the time required for the operator to perform a correction operation using the sewing machine to correct the sewn object after the usual operation; and Output the normal operation time and the corrected operation time.

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