KR20090064311A - Sewing recorder of sewing machine - Google Patents

Abstract

A sewing record unit of a sewing machine based on sewing time and rotation speed of a main shaft is provided to analyze an operation pattern of an operator easily and to recognize driving time of the sewing machine conveniently. A sewing record unit of a sewing machine comprises the followings: measuring unit of rotation speed measuring rotation speed of a main shaft; a measuring unit(30) of accumulating time; a drawing up unit(31) of the total data corresponding to the total time and a plurality of reference rotation speed; and a displaying unit(41) displaying the total data.

Description

Sewing recorder for sewing machine {SEWING RECORDER OF SEWING MACHINE}

The present invention relates to a sewing recording apparatus of a sewing machine for recording the sewing status based on the rotation speed and sewing time of the sewing machine main shaft.

Conventionally, a sewing machine for a sewing machine for measuring a change in the rotational speed of a sewing machine spindle during sewing is known from the viewpoint of grasping the sewing situation of an operator who performs sewing work of the sewing machine (for example, See Patent Document 1).

The sewing machine of the conventional sewing machine is configured to detect the rotational speed of the sewing machine main shaft during the sewing operation, and to record the detected rotational speed every time a predetermined time elapses. Then, the recorded trends for each time elapsed are displayed on the operation panel 41 as a graph of time versus rotational speed as shown in FIG.

[Patent Document 1] Japanese Patent Laid-Open No. 2006-167069

Here, from the viewpoint of improving the sewing work of the worker, it is necessary to analyze the working pattern of the sewing work unique to each worker by grasping the driving time of the sewing machine for each rotation speed of the sewing machine main shaft.

However, according to the sewing machine of the conventional sewing machine, only a graph of the temporal change in the rotational speed of the sewing machine's main shaft is displayed on the operation panel 41, and the analyst looks at the graph only, and the worker's own work pattern (habit or habit). Analysis of the need to find the focus point for the improvement of sewing work, there was a problem that a very difficult task that takes time and effort in the analysis.

An object of the present invention is to improve the work efficiency by making it easy to analyze the work patterns unique to the worker.

In order to achieve the above object, the sewing recording apparatus of the sewing machine according to the present invention is characterized in that the rotational speed measuring means for measuring the rotational speed of the main shaft of the sewing machine, and each of the preset reference rotational speed, the measured rotational speed is each Accumulated time calculating means for accumulating time exceeding a reference rotational speed, respectively, and calculating cumulative time for each reference rotational speed; and cumulative data comparing the plurality of reference rotational speeds with the calculated cumulative time; And a display means for displaying a picture based on the above contrast data.

According to the sewing recording apparatus of the sewing machine according to the present invention, the rotational speed of the main shaft of the sewing machine is measured by the rotational speed measuring means, and the running time of the sewing machine for each of the plurality of reference rotational speeds is accumulated by the cumulative time calculating means. By accumulating data creation means, it is possible to generate contrast data in which a plurality of reference rotational speeds and cumulative time correspond to each other, and display a figure (figure or chart) based on the created contrast data. In this way, the worker working on the sewing operation automatically acquires the cumulative time versus the reference rotation speed, and can grasp the work pattern by using the cumulative time versus the rotation speed.

According to the sewing recording apparatus of the sewing machine according to claim 1, by displaying the cumulative data corresponding to the cumulative time versus the reference rotational speed in the form of a table or a graph, for example, a worker may not be able to drive the sewing machine at a predetermined low speed or less. The worker's own work patterns, such as twice as long as other workers, can be easily quantitatively identified. Accordingly, the work patterns for each worker can be analyzed to find a focus for improving the sewing work. As a result, the sewing work efficiency of each worker can be improved.

According to the sewing recording apparatus of the sewing machine according to claim 2, since the cumulative data for each worker can be automatically acquired, the same effect as described in claim 1 can be obtained, and the work pattern for each worker can be obtained more easily. You can do it.

Hereinafter, an embodiment of a sewing recording apparatus of a sewing machine according to the present invention will be described with reference to FIGS.

As shown in FIG. 1, the sewing machine main body of the sewing machine 1 is provided with a needle 5 supported by the needle bar 3, and the needle bar 3 is connected to a sewing machine spindle (not shown), and the needle bar 3 is connected to the needle bar 3. The needle 5 supported at the upper and lower ends of the needle 5 moves up and down in accordance with the rotation of the sewing machine main shaft driven by the main shaft motor 7.

In addition, an encoder 9 is attached to the pulley of the sewing machine main shaft, and the encoder 9 is configured to generate a pulse signal having a frequency proportional to the rotational speed of the sewing machine main shaft according to the rotation of the sewing machine main shaft.

In addition, a pedal 10 is installed in the sewing machine 1, and the sewing machine 1 rotates the main shaft motor 7 to start sewing as the sewing operator steps on the pedal 10. ), The thread is cut to finish sewing.

The sewing machine 1 has a sewing machine control device 11, and the sewing machine control device 11 includes a CPU 12 for controlling the whole sewing of the sewing machine 1, and recording means for storing calculated data or detected and measured data. It consists of a memory 13 composed of an EEPROM, an EPROM, etc., a ROM 15 storing a sewing program, and the like, a RAM 16 providing a work area, and the like. The sewing machine control device 11 controls sewing according to the step amount of the pedal 10 in accordance with sewing parameters, sewing data, and other various commands recorded in the memory 13 or the ROM 15.

When the sewing machine control device 11 detects that the pedal 10 is pressed down, the sewing machine starting command is stored to drive the needle 5 by moving the main shaft motor 7 of the sewing machine 1 up and down. At the same time, the base fabric is sewn by transferring the base fabric to a predetermined cloth feed pitch along the shanghai east of the needle 5. At this time, the sewing machine control device 11 according to signals from the various sensors 17, sewing data or adjustment data stored in the memory 13, etc., various actuators 18 such as the main shaft motor 7, the solenoid valve and the motor. The sewing is controlled by controlling the drive. When the sewing machine control device 11 detects that the pedal 10 is pressed down, the sewing machine control device 11 stores the thread cutting instruction to cut the thread and finish sewing.

The sewing machine control device 11 further includes a rotation speed measuring means 29 for measuring the rotational speed of the sewing machine main shaft based on the pulse signal output from the encoder 9, and the sewing machine control device 11 starts the sewing machine. When the main shaft motor 7 of the sewing machine 1 is stored by storing a command, the rotation speed of the sewing machine spindle is measured every time a predetermined time elapses, and the rotation speed data is recorded in the memory 13 serving as the rotation speed recording means. It is supposed to.

In addition, the sewing machine 1 is provided with a timer 19 as a time measuring means, and the sewing machine control device 11 is a time from when the sewing machine start command is generated by the timer 19 until a thread cutting command occurs, and The time from when the actual cutting command is generated until the next actual cutting command is generated is measured, and data of these measured times is recorded in the memory 13.

Furthermore, the sewing machine 1 has an operating device 20 which functions as worker data input means for inputting worker data specifying a sewing worker of the sewing machine and sets various operations of the sewing machine 1, and the operating device 20 ) Is provided with a display portion 21 made of a liquid crystal display panel. The display unit 21 is provided with a transparent touch panel operation button 22, and a plurality of function buttons 23 are provided at the periphery of the display unit 21.

The operation device 20 has a CPU 25, a memory 26 made up of EEPROM, EPROM, or the like as a recording means for storing measured data, a ROM 27, and a RAM 28, and the CPU 25 has operation buttons. By operating the 22 or the function button 23, various operations or settings are performed in accordance with the input signal.

In addition, the operation device 20 is provided to the rotational speed measuring means 29 for a plurality of preset reference rotational speeds based on the rotational speed data of the sewing machine main shaft recorded in the memory 13 of the sewing machine control device 11. Cumulative time calculating means 30 for calculating the accumulated time for each reference rotational speed by accumulating the time at which the rotational speed measured is higher than each reference rotational speed, respectively, and calculating the plurality of reference rotational speeds and the cumulative time described above. Contrast cumulative data generating means 31 for producing contrast cumulative data corresponding to the cumulative total accumulated by the means 30 and the display unit 21 are displayed. Display means 41 is displayed on the display portion 21 in the form of a graph. Moreover, the operating device 20 is provided with a timer 32 as a time measuring means.

In addition, the sewing machine control device 11 and the operation device 20 can communicate with each other through the interfaces 33 and 35 so that various data can be exchanged with each other, and the sewing machine control device 11 operates. According to the data set by the operating device 20 input from the device 20, the main shaft motor 7 and the various actuators 18 are controlled and sewn.

In addition, the operation device 20 is capable of exchanging various data with the external computer 37 through another interface 36, and the above-described accumulated data is also provided through the interface 36. It can output to (37). In addition, communication with the removable recording medium 39 which functions as an external storage medium via the other interface 38 enables communication with each other so that the data recorded on the removable recording medium 39 can be read. Various data including the above-described cumulative total data of (20) can be recorded and stored on the removable recording medium 39. Therefore, the operation device 20 also functions as an output means for outputting the above-mentioned accumulated total data to the outside.

Next, measurement of the rotational speed of the main shaft of the sewing machine by the sewing recording apparatus 2 of the sewing machine 1 according to the present embodiment will be described with reference to FIG. 3. In this embodiment, the rotation speed of the sewing machine spindle will be described as the time-lapse versus the rotation speed of the sewing machine spindle.

As shown in FIG. 3, when the power switch 8 of the sewing machine 1 is first turned on by an operator, the sewing machine control device 11 simultaneously displays an initial screen on the display unit 21 of the operating device 20. Various data is initialized (ST 1).

Subsequently, the sewing machine control device 11 monitors whether the pedal 10 has been stepped on by the operator (ST 2), and if the front step is detected (Yes at ST 2), the sewing machine start command is stored. (ST 3), the main shaft motor 7 is driven to rotate the sewing machine main shaft (ST 4).

On the other hand, when the front stepping operation is not detected (No at ST 2), the operation of the operation device 20 is detected by detecting whether the operation button 22 or the function button 23 of the operation device 20 has been operated. The operator data is input according to the operation of the button 22 or the function button 23 to determine whether the operator has been changed (ST 5). Here, when the sewing machine control device 11 determines that the worker is changed (Yes at ST 5), the sewing machine control device 11 stores the worker data of the changed worker in the memory 13 (ST 6). Then, the sewing machine control device 11 stores the worker data in the memory 13 (ST 6), or if it is determined that the worker has not been changed (No at ST 5), the sewing machine control device 11 continues. It is determined whether or not the work process is changed by the operation of the operation button 22 or the function button 23 (ST 7).

If it is determined that the work process is changed (Yes in ST 7), the work process data of the changed work process is stored in the memory 13 (ST 8). Then, the sewing machine control device 11 stores the work process data in the memory 13 (ST 8), or if it is determined that the work process has not been changed (No at ST 7), whether the stepping operation is performed. Continues to be monitored (ST 2).

In addition, after the sewing machine control device 11 rotates the sewing machine spindle (ST 4), it monitors whether or not the front stepping operation of the pedal 10 is continued (ST 9), and if the front stepping operation is continued, (Yes in ST 9), while continuously rotating the sewing machine spindle (ST 4), monitoring whether or not the front stepping operation is continued is repeated (ST 9). On the other hand, when the sewing machine control device 11 detects that the front stepping operation is completed (No at ST 9), the start stop command is stored (ST 10), and the rotation of the sewing machine main shaft is stopped (ST 11). Then, the sewing machine control device 11 monitors whether or not the pedal 10 is stepped down while the sewing machine spindle stops rotating (ST 12), and if the stepped step is not performed (ST 12). No at 12), it is monitored whether the front stepping operation of the pedal 10 has been performed (ST 2). On the other hand, when the stepping operation is performed (Yes in ST 12), the thread cutting instruction is stored in the memory 13 (ST 13), the thread is cut (ST 14), and sewing is finished, and the sewing machine ( The operator monitors whether the pedal 10 is stepped on by the operator until the power switch 8 of 1) is turned off (ST 2).

At this time, as shown in Figure 4, the rotational speed measuring means 29 of the sewing machine control device 11, when the power switch 8 of the sewing machine 1 is turned on by the operator, the periodic interruption (interrupt) processing Monitor whether the sewing machine spindle is rotating (ST 20). Here, when it is determined that the sewing machine spindle is rotating (Yes in ST 20), the rotational speed measuring means 29 starts measuring the rotational speed of the sewing machine main shaft (ST 21), and determines a predetermined speed for measuring the rotational speed. It is determined whether or not the measurement time of has been reached (ST 22). The said predetermined time is a reference unit time at the time of recording sewing conditions, and is 100 msec in this embodiment. When the rotational speed measuring means 29 determines that the predetermined measurement time has been reached (Yes at ST 22), the CPU 12 receives the pulse signal from the encoder 9 to rotate the sewing machine main shaft. The speed is calculated and the measured rotational speed is recorded in the memory 26 (ST 23).

On the other hand, when the rotation speed measuring means 29 determines that the sewing machine spindle is not rotating (No at ST 20) or when it is determined that the predetermined measurement time for measuring the rotation speed has not been reached (at ST 22). No) ends the process without measuring the rotational speed of the sewing machine main shaft. The process of monitoring the rotation of the sewing machine main shaft by the rotational speed measuring means 29, or the process of measuring the rotational speed when the sewing machine main shaft is rotating, is performed by the operator by the power switch 8 of the sewing machine 1; Execution continues until it is turned off.

Next, FIGS. 5 through 8 illustrate a process of creating accumulated total data in which the driving time for each rotational speed of the sewing machine 1 is accumulated using the recorded rotational speed data, and displaying the created total accumulated data as a graph. Use it to explain.

In addition, in this embodiment, calculation of the cumulative time by the cumulative time calculating means 30 shown in FIG. 5 shall be performed automatically whenever the thread cutting shown in ST14 of FIG. 3 is made. First, as shown in FIG. 5, the cumulative time calculating means 30 of the operating device 20 reads out the worker data and the work process data of the sewing operation started after the last chamber cutting from the memory 13 (ST 30). On the basis of the read worker data and the work process data, a total data recording area of the work process of the worker is prepared (ST 31).

As shown in FIG. 6, the contrast total data recording area is an area for recording the contrast total data created by the contrast total data creating means 31 based on the accumulated time calculated by the total time calculating means 30. FIG. In the present embodiment, as reference speeds, the reference rotation speeds are preset in the total accumulated data recording area in units of every 500 rpm from the rotational speed 100 rpm of the sewing machine main shaft to the rotational speed 5500 rpm after each rotational speed of 500 rpm. It is possible to record the cumulative time for the reference speed.

Subsequently, the cumulative time calculating means 30 reads the rotational speed data from the memory 13 of the sewing machine control device 11 in the order in which it is stored (ST 32). It is judged whether or not it is larger than the minimum reference rotational speed of the contrast accumulated data recording area (ST 33). When the accumulated time calculating means 30 determines that the read rotation speed data is greater than the minimum reference rotation speed (Yes at ST 33), the time corresponding to the minimum reference rotation speed in the comparison cumulative data recording area is determined. The reference unit time is added to the accumulated total data (ST 34). In this way, the reference unit time is added to the accumulated time data corresponding to each reference rotation speed in the contrast accumulated data recording area when the rotation speed data read from the memory 13 is larger than each reference rotation speed.

Further, the cumulative time calculating means 30 determines whether there is the next largest reference rotational speed in the contrast accumulated data recording area (ST 35), and if it determines that there is the next largest reference rotational speed (at ST 35). Yes), it is determined whether the read speed data is greater than the next reference speed (ST 36). When the accumulated time calculating means 30 determines that the read rotation speed data is greater than the next largest reference rotation speed (Yes in ST 36), the accumulated time calculation means 30 is applied to the accumulated data over time corresponding to the corresponding reference rotation speed. After adding the reference unit time (ST 34), it is determined whether or not the next largest reference rotational speed is again present in the accumulated total data recording area (ST 35).

On the other hand, when the accumulated time calculating means 30 determines that the read rotation speed data is equal to or smaller than the minimum reference rotation speed in the comparison accumulated data recording area (No in ST 33), the next larger criterion If it is determined that there is no rotation speed (No at ST 35), or if the rotation speed data read is equal to or smaller than the next larger reference rotation speed (No at ST 36), the rotation speed read from ST 32 The processing of the accumulated total time calculating means 30 is ended, and the processing of the contrast accumulated data creating means 31 executed in ST 37 to ST 41 is executed.

Here, the contrast total data creating means 31 determines whether or not the rotation speed data further stored in the memory 13 exists (ST 37). If it is determined that the rotational speed data exists (Yes at ST 37), it is determined whether the worker (sewing worker) or the work process (sewing work process) has been changed (ST 38). In addition, in the case where it is determined that the worker data and the work process data are stored in the memory 13 and the worker or the work process is changed (Yes at ST 38), the contrast data accumulation means 31 stores the read worker data and On the basis of the work process data, it is determined whether or not there is a cumulative data recording area for the work process of the worker (ST 39). In contrast, when it is determined that each of the accumulated total data recording areas exists (Yes in ST 39), the contrast accumulated data creating means 31 compares the accumulated total data of the work process of the worker corresponding to the recorded accumulation area of the contrast accumulated data. Change to the recording area (ST 40). On the other hand, if it is determined that the cumulative data recording area of the work process of the corresponding worker does not exist (No in ST 39), the cumulative data recording area of the work process of the worker is newly created (ST 41). .

In addition, the comparison total data creating means 31 determines that the worker or the work process has not been changed (No in ST 38), when the target for comparing the read rotation speed data is changed (ST 40), or When a new cumulative total data recording area for each worker and work process is created at predetermined rotational speeds (ST 41), the processing is shifted to the cumulative time calculating means 30 starting from ST 32 again. Thereafter, the operating device 20 reads the rotational speed data from the memory 13 again (ST 32), and repeats the processes of ST 33 to ST 36 and ST 37 to ST 41 again.

On the other hand, when it is determined that no additional rotational speed data exists in the memory 13 (No in ST 37), the process of the contrast accumulating data creating means 31 is terminated.

As described above, the contrast running total data generating means 31 creates the running total running data through the running time calculating means 30, and as a result, a plurality of reference rotational speeds for each sewing worker or working process in the running total running data recording area. And cumulative total data Ds (FIG. 6) corresponding to the calculated cumulative time are generated.

For example, when accumulating the driving time for every rotational speed based on each data stored in the memory 13 of the sewing machine control device 11 shown in FIG. 6, the cumulative time calculating means 30 cuts the thread shown by the arrow S. FIG. At the time when the command is received, first, the worker data and the work process data inputted after the previous chamber cutting are first read (ST 30), and the accumulated data recording area (D) for the read worker data and work process data is read. After the preparation (ST 31), the rotation speed 112 rpm stored after the sewing machine start command is read from the memory 13 of the sewing machine control device 11 shown in Fig. 6 (ST 32), and the read rotation speed data is the minimum. Compare whether the reference speed is greater than 100rpm (ST 33). Then, the cumulative time calculating means 30 determines that the rotational speed is greater than 100 rpm (Yes at ST 33), and adds 100 msec, which is the reference unit time, to the cumulative data for the time corresponding to the reference rotational speed 100 rpm (ST 34). ).

Subsequently, the cumulative time calculating means 30 determines that there is the next larger reference rotational speed after the minimum reference rotational speed 100rpm (Yes at ST 35), and the first rotational speed 112rpm is read as the minimum reference rotational speed 100rpm. As a result of comparing whether the reference speed is greater than 500rpm, it is determined that it is smaller than 500rpm (No at ST 36), and the reference unit time is not added to the accumulated time data corresponding to 500rpm. The accumulated data creating means 31 determines whether or not the rotation speed data further stored in the memory 13 exists (ST 37).

In addition, since the additional rotational speed data exists after the rotational speed data of the rotational speed 112 rpm in the memory 13, the comparison total data creating means 31 determines that the next rotational speed data exists (at ST 37). Yes). Furthermore, the contrast total data creating means 31 determines that the operator or the work process has not changed since there is no worker data and the work process data following the rotation speed data of the rotation speed 112 rpm (No at ST 38). The cumulative time calculating means 30 reads the rotational speed 1523 rpm, which is the next rotational speed data, from the memory 13 (ST 32).

Subsequently, the cumulative time calculating means 30 determines that the read rotation speed data is larger than the rotation speed 100 rpm (Yes at ST 33), and 100 msec to the accumulated time data corresponding to the rotation speed 100 rpm at the reference rotation speed. Is added (ST 34). As a result, the cumulative data for the time corresponding to the reference rotational speed of 100 rpm in the comparative cumulative data recording area is added to the reference unit time at the rotational speed of 112 rpm, which is read first, to be 200 msec. In this way, the cumulative time calculating means 30 accumulates the driving time for each reference rotational speed.

The cumulative time calculating means 30 determines that the read speed 1523 rpm is greater than the reference speed 500 rpm which is the next larger than the first 100 rpm, and when the time is Yes in ST 36, the reference unit time in ST 34 (Fig. 6 accumulated). Data), and it is again determined whether there is a next reference rotational speed (ST 35). The cumulative time calculating means 30 repeats the above steps of ST 35 to ST 36 to a reference rotation speed of 1500 rpm, and compares whether or not the read rotation speed is larger than the rotation speed of 2000 rpm. Thereafter, the contrast accumulating data creating means 31 determines whether or not the rotation speed data further stored in the memory 13 exists (ST 37). In addition, in the figure showing the memory of the sewing machine control apparatus of FIG. 6, the rotational speed data is recorded even after the thread cutting instruction indicated by arrow S, but the data after arrow S is accumulated in the execution of the thread cutting instruction of arrow S. As the rotational speed data obtained after the processing of the time calculating means 30, the cumulative time calculation and the comparison data generation are performed for each of the rotational speed data at each acquisition of the actual cutting instruction.

Next, the display means 41 of the operating device 20 will be described. As shown in FIG. 7, the display means 41 of the operating device 20 has a predetermined function button 23 operated by an operator so that the accumulated time versus reference rotational speed by the display means 41 (accumulated time versus rotation). Given the instruction of graph display of speed (also described as altitude) (Yes at ST 51), the display unit 21 generates a graph of cumulative time vs. rotational speed (figure) based on the accumulated data of the work and the work process. ) Is displayed (ST 52).

Subsequently, the display means 41 determines whether there is a change instruction of the worker and the work process by the operation of the predetermined operation button 22 (ST 53), and if there is a change instruction of the worker and the work process (ST 53). Yes), the corresponding cumulative total data is read from the corresponding cumulative data storage area of the corresponding worker and the work process (ST 54).

In addition, the display means 41 ends the graph display by the operation of the predetermined operation button 22 when there is no change instruction for the worker and the work process or after reading the cumulative data for the changed worker and the work process. To determine whether there is an instruction to perform (ST 55), and if there is no termination instruction (No at ST 55), generate a graph (figure) of cumulative time versus rotational speed based on the accumulated cumulative data corresponding to the changed worker and work process. Display on the display unit 21 (ST 52). On the other hand, when there is an end instruction (Yes in ST 55), the processing of the display means 41 is terminated.

Next, the operation of the present embodiment will be described.

According to the present embodiment, the operating device 20 measures the rotational speed of the sewing machine spindle by the rotational speed measuring means 29 according to the periodic intervention process, and records the rotational speed data in the rotational speed measuring means 29. The cumulative time calculation means 30 accumulates the time exceeding each reference rotational speed for each of the plurality of reference rotational speeds, and calculates the accumulated time for each reference rotational speed based on the rotational speed data. The cumulative data generating means 31 generates the accumulated cumulative data corresponding to the plurality of reference rotational speeds and the calculated cumulative time, and the display means 41 can generate a graph of cumulative time versus rotational speed. Thus, the worker working on the sewing machine automatically acquires a graph of cumulative time versus rotational speed by operating a predetermined function button 23 in the operating device 20 of the sewing machine 1, and displays the cumulative time versus rotational speed. Work patterns can be identified using.

Therefore, it is possible to easily grasp the work pattern unique to each worker, thereby analyzing the work pattern of each worker can find the focus point for improving the sewing work. As a result, it is possible to improve the efficiency of the worker's sewing work.

In addition, this invention is not limited to the said embodiment, It can variously change as needed.

For example, in the above embodiment, the cumulative time calculating means accumulates the time when the measured rotational speed exceeds each reference rotational speed, but may also accumulate the time when the measured rotational speed is equal to or greater than each reference rotational speed.

Incidentally, in the above embodiment, the display means 41 prepares and displays a graph of the cumulative time versus the rotational speed (figure), but displays the table (the diagram) of the cumulative time with respect to the reference rotational speed indicated by Ds in FIG. 6 as it is. You can also do that. The figures and diagrams are collectively called drawings.

1 is a schematic front view showing a sewing machine using a sewing recording apparatus of a sewing machine according to the present invention.

FIG. 2 is a block diagram showing the configuration of the sewing recording apparatus of the sewing machine shown in FIG.

FIG. 3 is a flowchart showing each process of sewing machine driving by the sewing recording apparatus of the sewing machine shown in FIG.

FIG. 4 is a flowchart showing each step of periodic intervention processing for monitoring the rotation of the sewing machine spindle by the sewing recording device of the sewing machine shown in FIG.

FIG. 5 is a flowchart showing each step of the cumulative time calculating means and the comparison cumulative data generating means of the sewing recording apparatus of the sewing machine shown in FIG.

6 is an explanatory diagram when the cumulative time calculating means of FIG. 5 calculates the cumulative time, and the contrast cumulative data creating means creates the contrast cumulative data.

FIG. 7 is a flowchart showing a process in which the display means of the sewing recording apparatus of the sewing machine shown in FIG. 1 displays a graph of cumulative time versus rotational speed based on the accumulated total data shown in FIG.

8 is a graph of cumulative time versus rotational speed displayed by the display means of the sewing recording apparatus of the sewing machine shown in FIG.

Fig. 9 is a schematic diagram showing an example of a graph showing the transition of the rotational speed of the sewing machine main shaft displayed on the operation panel in the sewing machine of the conventional sewing machine.

              Explanation of symbols on the main parts of the drawings

1: sewing machine 2: sewing recording device

3: needle bar 5: needle

6: sewing machine spindle 7: spindle motor

11: sewing machine controller 12: CPU

13: memory 19: timer

20: operating device 21: display unit

22: operation button 23: function button

25 CPU 26 Memory

29: rotational speed measuring means 30: cumulative time calculation means

31: comparison data creation means 41: display means

Claims (2)

Rotational speed measuring means for measuring the rotational speed of the main shaft of the sewing machine, Cumulative time calculating means for accumulating time for which the measured rotation speed exceeds each reference rotation speed for each of a plurality of preset reference rotation speeds, and calculating cumulative time for each reference rotation speed; Contrast accumulating data creating means for creating contrast data corresponding to the plurality of reference rotational speeds and the calculated cumulative time; And a display means for displaying a picture based on the accumulated total data. The method of claim 1, And worker data input means for inputting worker data specifying a sewing worker of the sewing machine, wherein the accumulated total data creating means generates the total accumulated data for each sewing worker based on the inputted worker data. Sewing recorder of the sewing machine.

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