JP4592056B2 - Cell line work management system - Google Patents

Description

  The present invention relates to a cell line work management system.

  Conventionally, in line production processes using conveyors, productivity and quality have been improved by grasping problems such as product assembly work delays and assembly line production equipment outages, and identifying the causes. . The IE analysis management table, equipment operation management table, and production performance management table are used for line problem grasping and factor analysis, and the line status is tabulated on a monthly, weekly, and daily basis.

Further, in order to measure the actual work time for each process, a work process result collection device or the like has been proposed. (For example, Patent Document 1)
On the other hand, in order to improve work efficiency, cell line work in which a single line worker takes charge of a plurality of processes instead of a line production process using a conveyor has been adopted in many factories in recent years.
Here, the line work includes work such as parts assembly work, parts supply work, setup work, inspection / adjustment work, and parts mounting work.

Japanese Patent Laid-Open No. 10-227877

  In the line production process using a conveyor, the actual work time was obtained by measuring the conveyor pitch time. However, since there is no conveyor pitch time in the cell line work, the operator himself cannot grasp the actual work time. In some cases, quality building and work proficiency did not improve. Here, the creation of quality means that defects are reduced by reducing errors by training of the operator, and that any defect is known to anyone when the defect occurs.

  If the conveyor pitch time does not exist, the conventional work improvement method using various management tables cannot be used, so improvement measures cannot be formulated.

  For example, the actual work time of one cell includes the delay and progress of individual work time as a whole, and the actual work time of the entire line becomes extremely opaque. Furthermore, since the entire line includes various processes, it is difficult to improve the knitting efficiency for the entire line.

  The present invention was devised to solve such conventional problems, and an object thereof is to provide a cell line work management system that improves the quality and workability of the cell line work.

The present invention according to claim 1 is a cell line work management system for managing a cell line work in which one line worker handles a plurality of line processes, and stores a tact time determined for each line process. Storage means, timing means for measuring the actual work time from the start of work for each line process, and corresponding to each of the line processes, the line operator at the end of each work of the line process Switch means for operating , and warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated for each of the line processes , Means for recording that the actual work time at the time when the switch means is operated exceeds the tact time; and the tact time is exceeded. When recording, and means for increasing the tact time stored in said memory means the actual work of the time when said switch means is operated corresponds to a line process exceeds the tact time.
According to a second aspect of the present invention, there is provided a cell line work management system for managing a cell line work in which a single line worker takes charge of a plurality of line processes, wherein a tact time determined for each line process is provided. Storage means, timing means for measuring the actual work time from the start of work for each line process, and a line operator corresponding to each of the line processes. Switch means operated at the end, and warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated for each of the line processes And means for recording that the actual work time at the time when the switch means is operated is less than the tact time; and the tact time is less than the tact time. Means for reducing the tact time stored in the storage means corresponding to a line process in which the actual work time at the time when the switch means is operated is less than the tact time when the switch means is recorded. .
According to a third aspect of the present invention, there is provided a cell line work management system for managing a cell line work in which a single line worker takes charge of a plurality of line processes, wherein a tact time determined for each line process is provided. Storage means, timing means for measuring the actual work time from the start of work for each line process, and a line operator corresponding to each of the line processes. Switch means operated at the end, and warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated for each of the line processes And means for recording that the actual work time when the switch means is operated exceeds the tact time; and the tact time is exceeded. Means for increasing the tact time stored in the storage means corresponding to the line process in which the actual work time at the time when the switch means is operated exceeds the tact time, Means for recording that the actual work time at the time when the switch means is operated is less than the tact time, and the results at the time when the switch means is operated when it is recorded that the actual time is less than the tact time. Means for reducing the tact time stored in the storage means corresponding to a line process whose work time is less than the tact time.
According to a fourth aspect of the present invention, there is provided a cell line work management system for managing a cell line work in which a single line worker takes charge of a plurality of line processes, wherein a tact time determined for each line process is provided. Storage means for storing, time measuring means for measuring the actual work time from the start to the end of the line process work, provided corresponding to each line process, when the line worker at the end of the work of each line process By monitoring the switch means to be operated, the switch means and the time measuring means, the actual work time of each line process is measured, and the actual work time is compared with the tact time so that the actual work time is the tact time. Warning means for issuing a warning to the line operator when not within the range, and the results when the switch means is operated Means for counting the number of times that the working time has continuously exceeded the tact time for each of the line processes, and the number of times that the actual work time at the time when the switch means has been operated has continuously exceeded the tact time. When the predetermined value is reached, the number of times that the actual work time when the switch means is operated exceeds the tact time continuously is stored in the storage means corresponding to the line process in which the predetermined value is reached. Means for increasing the tact time.
According to a fifth aspect of the present invention, there is provided a cell line work management system for managing a cell line work in which one line worker takes charge of a plurality of line processes, wherein a tact time determined for each line process is provided. Storage means, timing means for measuring the actual work time from the start of work for each line process, and a line operator corresponding to each of the line processes. Switch means operated at the end, and warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated for each of the line processes And the number of times that the actual work time at the time when the switch means is operated is continuously less than the tact time for each of the line processes. And the actual work at the time when the switch means is operated when the number of times that the actual work time at the time when the switch means is operated is continuously less than the tact time reaches a predetermined value. Means for reducing the tact time stored in the storage means corresponding to the line process in which the number of times that the time has continuously dropped below the tact time has reached a predetermined value.
According to a sixth aspect of the present invention, there is provided a cell line work management system for managing a cell line work in which a single line worker takes charge of a plurality of line processes, wherein a tact time determined for each line process is provided. Storage means, timing means for measuring the actual work time from the start of work for each line process, and a line operator corresponding to each of the line processes. Switch means operated at the end, and warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated for each of the line processes And the number of times the actual work time at the time when the switch means is operated exceeds the tact time continuously for each of the line processes. And the actual work at the time when the switch means is operated when the number of times the actual work time at the time when the switch means is operated exceeds the tact time continuously reaches a predetermined value. Means for increasing the tact time stored in the storage means corresponding to the line process in which the number of times that the time has continuously exceeded the tact time has reached a predetermined value; and the time when the switch means is operated. Means for counting the number of times that the actual work time has continuously dropped below the tact time for each of the line processes, and the number of times that the actual work time at the time when the switch means has been operated has been continuously below the tact time The number of times that the actual work time at the time when the switch means is operated is continuously less than the tact time when the switch reaches a predetermined value. And means for reducing the tact time stored in the storage means corresponding to the line process has reached the value, the.
By these, line worker is able to recognize the actual work time, it is possible to improve the working proficiency inclusive making of quality. In addition, the tact time can be automatically optimized according to the proficiency level of each line worker, and work efficiency can be improved.

In the cell line work management system according to the present invention, the number of times the actual work was exceeded Tei the tact time of the time when said switch means is operated, and the actual work of the time when said switch means is operated There the actual work when the tact time was exceeded Tei, it is desirable to have a collecting unit to aggregate for each of the line process.

  According to the present invention, the quality and workability of cell line work can be improved.

  Next, an embodiment of a cell line work management system according to the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment in which a cell line management system according to the present invention is applied to a cartridge assembly line of an ink jet printer, FIG. 2 is a block diagram showing the configuration of a computer in FIG. 1, and FIG. FIG. 4 is a flowchart showing the procedure of the work completion check in the processing of FIG. 3, and FIG. 5 is a flowchart showing the control operation of the host computer in FIG.

  1, the cell line management system includes a host computer 1 that functions as a line operation database. The host computer 1 includes a personal computer 8, a display 9, a keyboard 10, a mouse 11, a printer 12, an Ethernet (registered trademark), and the like. Local area network (LAN) 13.

  The host computer 1 is connected to the intranet through the LAN 13.

  The host computer 1 is connected to the data collection tool 2 and the programmable controller 3 through the local area network 13, and the programmable controller 3 is connected to a remote input / output (I / O) unit (relay box) 4. The programmable controller 3 includes a designated data memory 3M, a set tact designation counter 3C1, a regular work time designation counter 3C2, and a production unit designation counter 3C3.

The remote I / O unit 4 includes a three-stage signal tower (LED display) 5, a melody device 6, and N input / output (I / O) terminals 7 ₁ , 7 ₂ ,. _N and the production management display device 19.

  The three-stage signal tower 5 has green, yellow, and red LEDs, and lights and extinguishes each color LED in response to a signal input from the programmable controller 3.

The I / O terminals 7 ₁ , 7 ₂ ,..., 7 _N correspond to a plurality of line processes P ₁ , P ₂ ,..., P _N handled by one line worker, and there are a plurality of line workers. Sometimes, a similar I / O terminal is provided for each line operator.

I / O terminal _{7 1,} 7 2, ..., _7-button switch _PB 1 press the _{N illuminated,} PB 2, ..., PB _N (work completion switch lamp) and LED indicator _{LED 1,} LED 2, ..., LED _N (work completed lamp) is provided, respectively, button switch _{PB 1, PB} 2 press line worker is illuminated, ..., and press the PB _N, illuminated push button switch _{PB 1, PB 2, ...,} PB N internal The lamp lights up. This press line worker illuminated button switch _{PB 1, PB 2, ...,} can be readily observed that pressing the PB _N.

Button switch _{PB 1,} PB 2 press further illuminated, ..., the PB _N is pressed, a predetermined signal is sent to the programmable controller 3.

Button switch _PB 1 illuminated _push, PB 2, ..., PB _N internal lamp is extinguished by turning off the signal from the programmable controller 3 is turned on.

On the other hand, the LED indicators LED ₁ , LED ₂ ,..., LED _N are turned on and turned off by turning on / off signals from the programmable controller 3.

The remote I / O unit 4 is connected to the I / O terminals 7 ₁ , 7 ₂ ,..., 7 _N and completes line process work completion / work-in-progress data, production quantity, average cycle time, setup time, 5 minutes or more Line operation data including data such as data, other stop data, line process cycle time, and parts delivery data is acquired.

  The remote I / O unit 4 transfers the acquired line operation data to the programmable controller 3, and the programmable controller 3 stores the line operation data in a predetermined data memory 3M and also transfers it to a hard disk device 18 described later.

  Furthermore, the programmable controller 3 sends a command to start and stop the line operation to the three-stage signal tower 5 and the melody device 6.

  In FIG. 2, the host computer 1 has an arithmetic control unit 14, and the arithmetic control unit 14 includes a microcomputer including a central processing unit (CPU), a read only memory (ROM), and a random access memory (RAM).

  Connected to the arithmetic control unit 14 are a display 9, a keyboard 10, a mouse 11, a printer 12, a LAN 13, an internal clock 15, a serial interface (I / F) 16 such as an RS232C, a flexible disk 17, and a hard disk device 18.

  The hard disk device 18 collects the line operation data transferred from the programmable controller 3, and records the composition loss, continuous operation observation (for example, tact transition for each line worker, tact transition for each line, etc.) in units of days, In addition, the total results such as line operation data are recorded.

  The cell line work using the cell line work management system is executed as follows.

Programmable controller 3, the keyboard 10 of the host computer 1, line process P _1, P 2, _..., predetermined tact time (set tact data) is inputted in the P _N, specified data memory of the tact time is programmable controller 3 Stored in 3M. The set tact data is loaded into the set tact designation counter 3C1 in the programmable controller 3, and is increased or decreased in accordance with the subsequent adjustment.

  In the three-stage signal tower 5, when a command to start work is input from the programmable controller 3, the green LED is turned on, and the line worker starts work of a series of line processes in response to the lighting of the green LED. When a plurality of line workers are supposed to follow the command of the same three-stage signal tower 5, these line workers start a series of line process work all at once in response to the lighting of the green LED. .

Line worker is on a per-line process is completed, the line process _{P 1,} P 2, ..., corresponding to _{P N,} I / O terminal _{7 1, 7 2, ...,} 7 N button illuminated push the switch _{PB 1, PB 2, ...,} press the PB _N. For example, when a line process _{P 1} is completed, pressed button switch PB ₁ Press I / O terminal ₇₁ of the illuminated is. The programmable controller 3 this time, I / O terminal _{7 1,} 7 2, ..., _7-button switch _PB 1 illuminated push of _N, PB 2, ..., it is notified that PB _N is pressed.

The programmable controller 3 measures the time (actual work time) from the work start to the end of each line process P ₁ , P ₂ ,..., P _N by the installation tact designation counter 3C ₁ . Programmable controller 3, the actual work, specifying data memory with a predetermined tact time of each line processes recorded in 3M, button switch PB 1 illuminated push up tact _time, PB 2, _..., PB _N is pressed when not, that is, when you did not receive a signal indicating the end of work until a predetermined time, I / O terminal _{7 1, 7 2, ...,} 7 N LED indicator _{LED 1,} LED 2 of, ..., LED _N To warn the line operator.

  At the same time, the programmable controller 3 lights the red LED of the three-stage signal tower 5 and outputs a predetermined melody (tact over melody) from the melody device 6 to warn that the actual work time has exceeded the tact time. To emit.

  The programmable controller 3 outputs a predetermined melody indicating work completion from the melody device 6 when a series of line processes handled by one line worker is completed. After the work is completed, the line operator returns to the first line process, repeats the line work, and continues the work until the line operation ends.

Programmable controller 3, the set tact specified counter 3C _1, for each line process, actual work time exceeds the cycle time by counting the (Tact over) number and actual work at that time, also working in the tact time The tact time is adjusted by counting the number of completions. For example, when the work time exceeds the tact time three times in succession, processing such as increasing the tact time by 0.1 second is executed. On the other hand, for example, when the work is completed within the tact time five times in succession, processing such as shortening the tact time by 0.1 second is executed.

  As a result, it is possible to set an optimum tact time suitable for the work proficiency of each line worker, and to maximize the work efficiency.

  On the other hand, since the line worker receives a warning when each process exceeds the tact time, he / she can recognize his / her actual work time, and can improve quality and work proficiency.

In addition, line worker, button switch _{PB 1, PB} 2 press each illuminated line step is completed, ..., press the PB _N, because to turn on the inside of the lamp, button switch _PB 1 illuminated push, PB _2, ... From the lighting status of _PN , the incomplete line process is obvious, and it is possible to prevent a shortage due to skipping the line process.

When the correspondence between each part of the present embodiment and the description of the claims of the claims is shown, the data memory in the programmable controller 3 corresponds to the storage means of the claims, and the set tact designation counter 3C1 in the programmable controller 3 corresponds to the time measuring means of claim, button switch _PB 1 illuminated _push, PB 2, ..., PB _N corresponds to the switch means, the programmable controller 3 corresponds to the control means, I / O terminal ₇ 1, 7 _2, ..., LED indicator _LED 1 of _{7 N, LED 2, ...,} LED N, button switch _PB 1 illuminated _push, PB 2, ..., PB _N inside the lamp, three-stage signal tower 5, melodies equipment 6 Corresponds to warning means.

3, control of the I / O terminals 7 ₁ , 7 ₂ ,..., 7 _N, etc. by the programmable controller 3 is executed by the following steps.

Step S1: First enter settings tact data from the keyboard 10 of the post computer 1 stores the set tact data to the specified data memory 3M programmable co down controller 3.

  Step S2: Following step S1, an instruction to start work is input from the programmable controller 3 to the three-stage signal tower 5, and the green LED is turned on.

  Step S3: Subsequent to step S2, the setting tact designation counter 3C1 of the programmable controller 3 starts counting up, and the working time is measured for each line process.

  Step S4: Following step S3, a predetermined command is sent from the programmable controller 3 to the melody device 6, and a predetermined melody indicating completion of work is output from the melody device 6 for a predetermined time (for example, 4 seconds).

Step S5: Following step S4, the process proceeds to task completion check, 1 individual I / O terminals _7, 7 2, ..., _7-button switch _PB 1 _N press the _illuminated, PB 2, ..., PB _N is pressed Check whether it was done. Step S5 is repeated for the number of I / O terminals 7 ₁ , 7 ₂ ,..., 7 _N.

In FIG. 4, the work completion check in step S5 is executed by the following steps. Here, the work completion check on process P ₁ will be described representatively.

Step S20: First I / O terminal 7 button switch PB ₁ illuminated push of ₁ waits until a predetermined time (e.g. 0.7 seconds) off, when the turned off a predetermined time the process proceeds to step S21.

Step S21: Following step S20, it is determined whether the button switch PB ₁ illuminated push is turned on, when the button switch PB ₁ illuminated push is not on, the process proceeds to step S26, button switch PB illuminated push _{When 1} is on, the process proceeds to step S22.

  Step S22: The signal from the programmable controller 3 for causing the melody device 6 to output the tact over melody is stopped, and the process proceeds to step S23.

  Step S23: The extinguishing signal from the programmable controller 3 for extinguishing the red LED of the three-stage signal tower 5 is turned off, and the process proceeds to Step S24.

Step S24: a lighting signal for lighting the LED indicator is turned off in the I / O terminal ₇ button switch PB ₁ illuminated push of _1, the process proceeds to step S25.

Step S25: the lighting to light the I / O terminal ₇ of _the buttons illuminated push switches PB ₁ the lamp is turned on, the flow returns to step S5.

  Step S26: It is determined whether or not the count value of the tact counter has exceeded the set tact data. If the count value has not reached the set tact data, the process returns to step S21. On the other hand, when the count value reaches the set tact data, the process proceeds to step S27.

Step S27: a lighting signal for lighting the LED indicator is turned on in the I / O terminal ₇ button switch PB ₁ illuminated push of _1, the process proceeds to step S28.

Step S28: turns on the lighting signal for lighting the inner lamp in I / O terminal ₇ button switch PB ₁ illuminated push of _1, the process proceeds to step S29.

  Step S29: The lighting signal is turned on to cause the melody device 6 to output a tact over melody, and the process proceeds to step S30.

  Step S30: The lighting signal from the programmable controller 3 for lighting the red LED of the three-stage signal tower 5 is turned on, and the process returns to Step S21.

  In FIG. 3 again, the processing after step S6 is executed.

Step S6: It is determined whether or not all the line processes P ₁ , P ₂ ,..., P _N are completed. If completed, the process proceeds to Step S7, and if not completed, the process returns to Step S5.

  Step S7: The set tact designation counter 3C1 determines whether or not tact over has occurred for a predetermined number of consecutive times. If the tact over has not occurred for a predetermined number of consecutive times, the process proceeds to step S8. When the continuous number does not reach the predetermined value, the process proceeds to step S9.

  Step S8: The set tact designation counter decreases the count value corresponding to a predetermined value (for example, 0.1 second), and stores the decreased value as set tact data A (variable). Next, the process proceeds to step S35.

  Step S9: It is determined by the set tact designation counter 3C1 whether or not a predetermined continuous number of tact over has occurred, and when the predetermined continuous number of tact over has occurred, the process proceeds to step S17. When the number of continuous tact overs has not reached the predetermined value, the process proceeds to step S10.

  Step S10: Numerical values are stored in the regular work time designation counter 3C2 and the production unit designation counter 3C3 incorporated in the programmable controller 3, and the process proceeds to step S11.

  Step S11: Store the actual work time data of each line process in the set tact designation counter 3C1, and proceed to Step S12.

Step S12: I / O terminal _{7 1, 7 2, ...,} LED indicator _{LED 1,} LED 2 in _{7 N,} ..., button switch _PB 1 Press LED _N and _illuminated, PB _{2, ...,} the PB _N in the lamp The extinguishing signal is turned on, and the work completion lamp and the work completion switch lamp are turned off.

  Step S13: Following the step S12, the set tact designation counter 3C1 is reset to prepare for the next actual work time measurement.

  Step S14: Following step S13, the count value is output and displayed on the production management display device 19.

  Step S15: It is determined whether or not a series of line processes has been completed. While the operation is continued, the line operation start coil (FIG. 5) is turned on, and when the operation is completed, the line operation start coil is turned off. When the line operation start coil is off, the process proceeds to step S16, and when the line operation start coil is on, the process returns to step S3.

  Step S16: The green LED extinguishing signal in the three-stage signal tower 5 is turned on to complete a series of line process management. After that, when the line operation start coil becomes on-data again, the line work management is resumed.

  Step S17: In the set tact designation counter, a count value corresponding to a predetermined value (for example, 0.1 second) is increased and stored as set tact data A (variable).

  Step S18: It is determined whether or not the set tact data A is larger than the current set tact data. If the set tact data A is larger than the original set tact data, the process proceeds to step S19. When the set tact data A is equal to or less than the initial set tact data, the process proceeds to step S10.

  Step S19: The set tact data A is substituted for the set tact data.

  Step S35: The set tact data A calculated in step S8 is substituted into the set tact data, and the process proceeds to step S10.

  In FIG. 5, the host computer 1 executes a control operation by the following steps.

  Step S31: It is determined whether or not the preset work start time is equal to the current time, and if it is equal to the current time, the process proceeds to step S32. If the work start time is not equal to the current time, the process jumps to step S33.

  Step S32: The line operation start coil data is turned on, and the process proceeds to step S33.

  Step S33: It is determined whether or not the preset work end time is equal to the current time, and if it is equal to the current time, the process proceeds to step S34. If the work end time is not equal to the current time, the process returns to step S31.

  Step S34: The line operation start coil data is turned off, and the process returns to step S31.

  The above embodiment relates to the cartridge assembly line of the ink jet printer. However, the present invention can be applied to a production line for other products, and can be used in various work lines other than the production line.

It is a block diagram which shows the Example which applied the cell line management system which concerns on this invention to the cartridge assembly line. It is a block diagram which shows the structure of the computer in FIG. 2 is a flowchart showing a control operation of the I / O terminal in FIG. It is a flowchart which shows the procedure of a work completion check in the process of FIG. It is a flowchart which shows the control operation of the host computer in FIG.

Explanation of symbols

1 host computer 2 Programmable controller 3 3-stage signal tower 4 melody instrument 7 ₁ ~7 _N I / O terminal

Claims (7)

A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
Storage means for storing a tact time determined for each line process;
Time measuring means for measuring the actual work time from the start of work for each line process,
Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
Means for recording that the actual work time at the time when the switch means is operated exceeds the tact time;
When it is recorded that the tact time has been exceeded, the tact time stored in the storage means corresponding to the line process in which the actual work time when the switch means is operated exceeds the tact time is stored. A cell line work management system comprising: means for increasing ; A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
Storage means for storing a tact time determined for each line process;
Time measuring means for measuring the actual work time from the start of work for each line process,
Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
Means for recording that the actual work time at the time when the switch means is operated is less than the tact time;
When it is recorded that the tact time is less than the tact time, the tact time stored in the storage unit corresponding to the line process in which the actual work time when the switch unit is operated is less than the tact time is stored. A cell line work management system, comprising: A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
Storage means for storing a tact time determined for each line process;
Time measuring means for measuring the actual work time from the start of work for each line process,
Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
Means for recording that the actual work time at the time when the switch means is operated exceeds the tact time;
When it is recorded that the tact time has been exceeded, the tact time stored in the storage means corresponding to the line process in which the actual work time when the switch means is operated exceeds the tact time is stored. Means to increase,
Means for recording that the actual work time at the time when the switch means is operated is less than the tact time;
When it is recorded that the tact time is less than the tact time, the tact time stored in the storage unit corresponding to the line process in which the actual work time when the switch unit is operated is less than the tact time is stored. A cell line work management system, comprising: A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
Storage means for storing a tact time determined for each line process;
Time measuring means for measuring the actual work time from the start of work for each line process,
Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
Means for counting the number of times the actual work time at the time when the switch means is operated exceeds the tact time continuously for each of the line steps;
The actual work time when the switch means is operated when the number of times the actual work time when the switch means is operated exceeds the tact time continuously reaches a predetermined value. And a means for increasing the tact time stored in the storage means corresponding to a line process in which the number of times that the number of times has been continuously exceeded has reached a predetermined value.   A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
  Storage means for storing a tact time determined for each line process;
  Time measuring means for measuring the actual work time from the start of work for each line process,
  Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
  For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
  Means for counting the number of times that the actual work time at the time when the switch means is operated continuously falls below the tact time for each of the line steps;
  The actual work time at the time when the switch means is operated when the number of times the actual work time at which the switch means has been operated continuously falls below the tact time has reached a predetermined value. A cell line work management system comprising: means for reducing the tact time stored in the storage means corresponding to a line process in which the number of times of continuously falling below a predetermined value has been reached.   A cell line work management system in which one line worker manages a cell line work for a plurality of line processes,
  Storage means for storing a tact time determined for each line process;
  Time measuring means for measuring the actual work time from the start of work for each line process,
  Switch means provided corresponding to each of the line processes, and operated by the line operator at the end of each of the line processes;
  For each of the line processes, warning means for issuing a warning to the line operator when the actual work time exceeds the tact time before the switch means is operated,
  Means for counting the number of times the actual work time at the time when the switch means is operated exceeds the tact time continuously for each of the line steps;
  The actual work time when the switch means is operated when the number of times the actual work time when the switch means is operated exceeds the tact time continuously reaches a predetermined value. Means for increasing the tact time stored in the storage means corresponding to the line process in which the number of times that the number of times has been continuously exceeded has reached a predetermined value;
  Means for counting the number of times that the actual work time at the time when the switch means is operated continuously falls below the tact time for each of the line steps;
The actual work time at the time when the switch means is operated when the number of times the actual work time at which the switch means has been operated continuously falls below the tact time has reached a predetermined value. A cell line work management system comprising: means for reducing the tact time stored in the storage means corresponding to a line process in which the number of times of continuously falling below a predetermined value has been reached. The number of times the actual work time when the switch means was operated exceeded the tact time, and the actual work when the actual work time when the switch means was operated exceeded the tact time The cell line work management system according to any one of claims 1 to 6 , further comprising a totaling unit that totals the time for each of the line processes.

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