JP2871434B2 - Line stop impact measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line for measuring the degree of influence of a stopped line on other lines when one of the lines is stopped, for example, in an automatic operation facility comprising a plurality of lines. The present invention relates to a stop impact measuring device.

[0002]

2. Description of the Related Art Conventionally, in an automatic operation facility comprising a plurality of lines, the operation status of each line is recorded on a recording sheet by an operator, and the operation of each line is managed based on this record.

In the operation management method of each line,
An operator records the cause of the stop and the stop time for each line during automatic operation on a recording sheet. Then, the recording paper is inspected by the maintenance staff in charge of the line, and when each stop time is longer than a predetermined time, for example, 10 minutes or more, or when the line is frequently stopped due to the same cause, However, it has been determined that the stoppage on the line has affected other lines, and the cause of the stoppage has been intensively taken to eliminate the influence on the other lines.

[0004]

However, in the above-described conventional line operation management method, it is not possible to associate a stop time between the lines, and the effect of the stopped line on other lines is not significant. It was not possible to judge objectively whether it was given.

That is, the determination of the degree of influence of the stopped line on other lines depends on the experience and intuition of the maintenance staff in charge of the line, and measures for eliminating the influence on the other lines are also taken by the line charge. He had to rely on the experience and intuition of maintenance personnel. For this reason, it was not possible to accurately narrow down the cause of the stop requiring a measure and the point of the measure, or to accurately grasp how much stop would not affect other lines.

SUMMARY OF THE INVENTION The present invention has been made to alleviate such problems in the prior art. In an automatic operation facility comprising a plurality of lines, the degree of influence of a stopped line on other lines is automatically calculated. It is another object of the present invention to provide a line stop impact measuring device capable of taking an effective measure against a line stop.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, in an automatic operation facility consisting of a plurality of lines, the effect of stopping one of the lines on another line is measured. A line stop impact degree measuring device, which is detachably attached to a work, and an identification unit having an identification code for identifying the work,
First detection means provided at the starting point on each line and detecting the identification means attached to the work moving on the line; and identification means provided at the end point on each line and attached to the work moving on the line. A second detecting means for detecting the means, electrically communicating with the first detecting means and the second detecting means, and recording an identification code of the identifying means detected by each detecting means and a reading time in each line. The work passage management means, the line operation state monitoring means for monitoring the operation state of each line, and the work passage management means and the line operation state monitoring means are electrically connected to each other and recorded in the work passage management means. Based on the information, the passage time of the work in each line is calculated, and the operation is stopped based on the passage time and the line operation information from the line operation status monitoring means. Lower the line is given to the other line
And a line stop influence measuring means for calculating an influence relating to a passage delay of the line.

Further, in the invention according to claim 2, in an automatic operation facility comprising a plurality of lines, a line stop influence degree measuring device for measuring an influence of a stop state of any line on another line, Provided for each line,
When the work flow from the upstream line stops,
An upstream hand waiting state checking means for transmitting a signal indicating that the apparatus is in an upstream hand waiting state based on an operation of a worker, and an operator provided for each line so that when the flow of work to a downstream line is stopped, the worker Downstream waiting state confirmation means for transmitting a signal indicating that the apparatus is in the downstream waiting state based on the operation, line operation status monitoring means for monitoring the operation status of each line, the upstream waiting state confirmation means, Electrically communicating with the hand-waiting state checking means and the line operation status monitoring means,
Based on the signal from the upstream hand waiting state confirming means or the signal from the downstream hand waiting state confirming means, and the line operation information from the line operation state monitoring means , the passage of the work that the stopped line gives to another line. A line stop influence measuring device is constituted by a line stop influence measuring means for calculating the influence of the delay .

[0009]

The present invention thus constructed operates as follows.

According to the first aspect of the present invention, first, an identification means having an identification code for identifying a work is detachably attached to the work.

The first detecting means provided at the starting point on each line detects the identifying means attached to the work moving on the line, and similarly, the second detecting means provided at the end point on each line. Then, the identification means attached to the work moving on the line is detected.

The work passage management means electrically connected to the first detection means and the second detection means records the identification code of the identification means detected by each detection means and the read time in each line.

The line operation status monitoring means monitors the operation status of each line.

A line stop influence measuring means electrically connected to the work passage management means and the line operation status monitoring means calculates and records a work passage time in each line, and also calculates a passage time during normal operation. Calculate and record the average time. Then, when the line stops in any one of the lines and a line stop signal is sent from the line operation status monitoring means, the calculated work passage time is compared with the recorded average passage time, and Calculate the delay time. Further, based on the line stop signal and the line restoration signal sent from the line operation status monitoring means, the stop time of each line is calculated. Based on the passage delay time and the stop time of each line calculated in this way, the delay rate in each line is calculated, and the degree of stop influence on other lines is calculated.

The delay rate of each line is represented by (passage delay time / stop time), and the line stop influence degree of each line is (delay rate / delay rate of all lines) × 1.
It is represented by 00.

According to the second aspect of the present invention, the operation status of the line is monitored by the line operation status monitoring means, and when a line stop occurs in any one of the lines, the line operation status monitoring means causes the line stop effect degree measurement means to be monitored. , A line stop signal is transmitted.

The line stop influence degree measuring means records the stopped line and the stop time based on the line stop signal from the line operation status monitoring means.

The worker in each line operates the upstream hand waiting state confirming means when the work stops flowing from the upstream side, and sends a signal to the line influence degree measuring means to the effect of the upstream hand waiting state. Outgoing. Further, when the work no longer flows to the downstream side, the downstream hand waiting state confirming means is operated to transmit a signal to the line influence degree measuring means to the effect of the downstream hand waiting state.

When the line stop state is restored in the line where the line stop has occurred, a line restoration signal is transmitted from the line operation status monitoring means to the line stop influence degree measuring means.

When the line stop influence measuring means receives the line restoration signal from the line operation status monitoring means, it records the restoration time of the stopped line and calculates the line stop time.

When the operation of the stopped line is resumed, the hand waiting state confirmation by the upstream hand waiting state confirming means and the downstream hand waiting state confirming means is automatically released, and the release signal is sent to the line stop influence degree measurement. Sent to the means.

Then, the time when the operator operates the upstream hand waiting state confirming means or the downstream hand waiting state confirming means is determined, and the operation time is after the occurrence of the line stop and the line stop influence degree measuring means outputs the release signal. If the received time is after the restoration of the line, it is determined that the stop of the line has affected the operation of the other line, and the line stop influence degree measuring means is provided with the upstream hand waiting state confirmation means or the downstream hand waiting state confirmation means. The time at which the hand-waiting state confirmation means is operated, the time at which the hand-waiting state confirmation is released, and the hand-waiting time are recorded.

The line stop influence measuring means calculates a delay rate in each line based on the hand waiting time and the line stop time, and calculates a stop influence on other lines.

Therefore, according to the first or second aspect of the present invention, when one of the lines stops, the degree of influence on the other line can be automatically calculated. Therefore, it is possible to take effective measures against line stoppage.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of the stop line influence degree measuring apparatus according to the first invention, and shows only a portion related to the gist of the invention.

The automatic driving equipment 10 in the stop line influence degree measuring device shown in FIG. 1 includes E / C (engine compartment), F / M (floor main), B / M temporary (body main temporary), and B / M. It consists of lines such as increase (body main increase).

An ID (recognition tag) 14 functioning as identification means is attached to the work 12 moving on these lines. The ID 14 includes, for example, a transmitter that transmits a unique identification code, and can be detachably attached to the work 12 by bonding or the like. In addition, ID14 is
The invention is not limited to the above-described transmitter, and any means may be used as long as the work 12 can be identified. For example, a seal with a bar code as an identification code may be used.

At the starting point of each line, a first antenna 16 functioning as a first detector is provided. When the work 12 passes, the ID 14 attached to the work 12 is detected and the identification code is read. At the end of each line, a second antenna 18 functioning as a second detector is provided.
Is detected and the identification code is read. Note that the first detector and the second detector are not limited to the antennas 16 and 18 described above.
Any means may be used as long as the identification means can be detected. For example, when the identification means is a sticker with a bar code, the identification means may be constituted by a bar code reader.

The first antenna 16 and the second antenna 18 provided on each line are connected to the controller 2 via a signal line 20.
Contact 2 The controller 22 functions as work passage management means.

Each line is provided with a line management PLC (programmable controller) 24 for individually managing and controlling each line.

The controller 22 and the line management PLC 24 are connected via signal lines 26 and 28 to each other.
The computer 30 is in contact. This computer 3
Numeral 0 functions as a line stop influence measuring means, and includes a CRT, a keyboard, a mouse, and the like as input / output devices.

Each line is provided with a buffer section 32 for buffering the influence of stopping other lines.

The operation of the thus configured line stop influence measuring device will be described below.

First, an ID 14 is detachably attached to the work 12 to be put into the line. Each ID 14
Has a unique identification code, and can identify the work 12 to which the ID 14 is attached.

The ID 14 attached to the work 12 moving on each line is first detected by the first antenna 16 provided at the starting point, and the identification code is read. The read identification code is sent to the controller 22 and recorded together with the reading time of the ID 14. At the end point of each line, the ID 14 is detected by the second antenna 18 and the identification code is read. The read identification code is sent to the controller 22 and recorded together with the reading time of the ID 14. When the identification code of ID14 detected by the second antenna 18 matches the identification code of ID14 detected at the start point of the line, the ID at the start point is determined.
The data of D14 and the data of ID14 at the end point are transmitted to the computer 30.

The computer 30 calculates the time required for the workpiece 12 to pass through the line based on these data, and classifies the data received from the controller 22 and the calculation result for each line. To remember. Further, the computer 30 calculates and records the average transit time of the work 12 during normal operation of the line.

Then, the line stops and the line management P
When the stop signal is transmitted from the LC 24, the time at which the stop signal is received is recorded, and at the time the stop signal is received, the ID 14 data attached to the work 12 in the first step of each line at the time when the stop signal is received. To set the flag. After that, the line returns and the stop state is released, and the ID with the flag set
When the data 14 is transmitted from the controller 22, the passage time of the work 12 with the flag set in the line is calculated, and the calculated passage time is compared with the previously stored average passage time in the line. If it takes more time than the average transit time, the transit delay time is calculated.

When the computer 30 receives the restoration signal of the stopped line from the line management PLC 24, the computer 30 calculates the suspension time based on the time at which the restoration signal was received and the previously received suspension time. Then, based on the calculated passage delay time and the stop time, the degree of influence that each line receives from the stop line is measured.

The influence of each line from the stop line is determined by the delay rate and the line stop influence.

The delay rate is calculated by (passage delay time / stop time), and is calculated for each line.

The line stop influence degree is calculated by (delay rate / all line delay rate) × 100. An example of the line stop influence will be described with reference to FIG.

FIG. 2 shows an example in which a stop occurs in the B / M temporary (body main temporary) line. The stop occurrence time is 10:00, the stop time is 12 minutes, and the other lines The degree of influence is "20" for the E / C (engine compartment) line, "45" for the F / M (floor main) line, and "45" for the B / M increase (body main increase) line. 35 ".

The above-mentioned data on the degree of influence of the stop line is tabulated on a weekly or monthly basis. An example of the monthly average stop impact degree will be described with reference to FIG.

FIG. 3 shows monthly average values of the degree of influence of stoppage on other lines when a stoppage occurs on each line. In addition, even if there is a line stop, if the degree of influence on other lines is “0”, the maximum value of the stop times is displayed as the non-effect stop time. For example, when a stop occurs in an E / C (engine compartment) line, the monthly average stop time is 7 minutes, the non-effect stop time is 2 minutes, and the monthly average value of the degree of influence applied to other lines is given. Is "54" for the F / M (floor main) line, "32" for the B / M provisional (body main provisional) line, and "14" for the B / M increase (body main increase) line. It has become.

Based on the line stop influence degree calculated in this way, the operation state of the entire line is comprehensively managed,
Measures such as grasping the line to be improved and setting an appropriate value for the buffer section 32 provided between the lines are taken so that the line operation can be performed efficiently.

Since the line stop influence measuring device measures the passing time of the work 12 at the starting point and the ending point of each line, it is possible to grasp a variation in work speed such as a work delay by an operator, Appropriate staffing in each line can be performed.

Next, an embodiment of the second invention of the line stop influence device will be described with reference to FIG. FIG. 4 is a schematic configuration diagram of the stop line influence degree measuring device according to the second invention, and shows only a portion related to the gist of the present invention.

In this line stop influence degree apparatus, the worker judges the passing state of the work 12 without using the ID 14 for the passage management of the work 12 in each line, and the upstream hand waiting button 34 and the downstream hand waiting button It is characterized in that the passage management of the work 12 in each line is performed by operating the 36. The same means as those in the embodiment according to the first invention are denoted by the same reference numerals, and detailed description thereof will be omitted.

The automatic driving equipment 10 in the stop line influence degree measuring apparatus shown in FIG. 4 includes E / C (engine compartment), F / M (floor main), B / M temporary (body main temporary), and B / M. It consists of lines such as increase (body main increase).

Each line includes an upstream hand wait button 34 operated when the upstream line stops and the work 12 stops flowing, and a work 12
And a downstream hand wait button 36 that is operated when it becomes impossible to flow the stream. This upstream hand wait button 34
Functions as upstream hand waiting state confirmation means, and the downstream hand waiting button 36 functions as downstream hand waiting state confirmation means.
The E / C line is provided with only the downstream waiting button 36 and is not provided with the upstream waiting button 34. This is because the E / C line is the first line in this equipment, In addition, each line has a line management PLC (programmable controller) that individually manages and controls each line.
24 are provided. The line management PLC 24 functions as a line operation status monitoring unit.

The upstream waiting button 34 and the downstream waiting button 36 and the line management PLC 24 are connected to the computer 30 via signal lines 38 and 28. This computer 30 functions as a line stop influence measuring means.

Each line is provided with a buffer section 32 for buffering the effect of stopping other lines.

The operation of the thus configured line stop impact measuring device will be described below.

When a line stop occurs in any one of the lines, the line management PLC 24 sends a signal to the computer 3.
A line stop signal is transmitted for 0. The computer 30 that has received the line stop signal records the stopped line and the stop time.

The worker in each line operates the upstream hand wait button 34 when the work 12 does not flow from the upstream side during the work, and operates when the work 12 does not flow to the downstream side. The hand wait button 36 is operated.

When the operator operates the upstream hand wait button 34 or the downstream hand wait button 36, the computer 3
For 0, an upstream waiting signal and a downstream waiting signal are transmitted, respectively.

When the line stop state is restored on the line where the line stop has occurred, the line management PL
A line restoration signal is transmitted from C24 to the computer 30, and the computer 30 records the restoration time of the stopped line and calculates the line stop time based on the line restoration signal.

Thereafter, when the operation of the stopped line is resumed, the upstream waiting button 34 and the downstream waiting button 36 are automatically returned, and a release signal of the waiting state confirmation is transmitted to the computer 30. You.

Then, the time when the operator operates the upstream hand wait button 34 or the downstream hand wait button 36 is judged, and the operation time is determined after the occurrence of the line stop and the computer 30.
If the time when the release signal is received is after the line restoration, it is determined that the stop of the line has affected the operation of the other line, and the computer 30 sends the upstream hand wait button 34 or the downstream hand The time when the wait button 36 was operated,
The time when the hand-waiting state confirmation is canceled and the hand-waiting time are recorded.

The computer 30 calculates the delay rate in each line based on the hand waiting time and the line stop time, and calculates the degree of stop influence on other lines.

The method of calculating the degree of influence of line stop and the like and the method of coping with the same are the same as those in the above-described first invention, and therefore description thereof will be omitted.

[0063]

As described above, the present invention has the above-described configuration, and can provide the following effects.

According to the first aspect of the invention, the identification means having the identification code is detachably attached to the work, and the passage of the work is detected by the first detection means and the second detection means provided at the starting point on each line. Then, the passage of the work is monitored by the work passage monitoring means. Further, the operation status of each line is monitored by the line operation status monitoring means. The passing time of the work in each line is calculated and recorded by the line stop influence measuring means, and the passing delay time and the line stop time when the line stops are calculated. Based on the passage delay time and the stop time of each line thus calculated, the delay rate of each line is calculated, and the degree of stop influence on other lines is calculated.

Therefore, since the line operation status of each line can be comprehensively managed, the degree of influence of the stop line on other lines can be objectively determined to take measures against the line stop and appropriate measures between the lines. The number of buffers and the like can be determined.

According to the second aspect of the present invention, the operating status of the line is monitored by the line operating status monitoring means. In addition, the operator operates the upstream hand waiting state checking means or the downstream hand waiting state checking means to grasp the hand waiting state in each line. Then, the line stop time and hand waiting time are calculated by the line stop influence measuring means, and the delay rate of each line and the stop influence on other lines are calculated.

Therefore, in addition to the same effects as the above-described invention, the line stop influence degree measuring device can be constituted by simple means, and equipment costs and the like can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a stop line influence degree measuring apparatus according to a first invention.

FIG. 2 is an explanatory diagram showing an example of a line stop influence degree in the invention shown in FIG. 1;

FIG. 3 is an explanatory diagram showing an example of a monthly average value of the line stop influence degree shown in FIG. 2;

FIG. 4 is a schematic configuration diagram of a stop line influence degree measuring apparatus according to a second invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automatic driving equipment 12 Work 14 ID 16 1st antenna 18 2nd antenna 20 Signal line (antenna-controller) 22 Controller 24 PLC for line management 26 Signal line (controller-computer) 28 Signal line (PLC-computer for line management) 30 Computer 32 Buffer 34 Upstream Hand Waiting Button 36 Upstream Hand Waiting Button 38 Signal Line (Hand Waiting Button-Computer)

Claims (2)

(57) [Claims] 1. An automatic operation facility comprising a plurality of lines, a line stop influence measuring device for measuring an influence of a stop state of any line on another line, the line stop influence measuring device being detachably attached to a work, Identification means having an identification code for identifying the work; first detection means provided at the starting point on each line and detecting the identification means attached to the work moving on the line; end point on each line; And a second detection means for detecting an identification means attached to a workpiece moving on the line, and electrically connected to the first detection means and the second detection means, and each detection is performed on each line. A work passage management means for recording an identification code and a read time of the identification means detected by the means; a line operation status monitoring means for monitoring the operation status of each line; The passage time of the work in each line is calculated based on the information recorded in the work passage management means. A line stop influence measuring means for calculating an influence on a passage delay of a work which the stopped line gives to another line based on the line operation information from the operation state monitoring means. Line stop impact measurement device. 2. An automatic operation facility comprising a plurality of lines, a line stop influence measuring device for measuring an influence of a stop state of any one of the lines on another line. An upstream hand waiting state confirmation means for transmitting a signal indicating that the workpiece is in an upstream hand waiting state based on a worker's operation when the flow of the work from the line on the side is stopped; When the flow of the work to the line is stopped, a downstream hand waiting state confirmation unit that sends a signal indicating that the work is in a downstream waiting state based on an operation of a worker, and a line operation status monitor that monitors the operation status of each line. Means, the upstream hand waiting state confirming means, the downstream hand waiting state confirming means, and the line operation status monitoring means. A signal from the downstream hand waiting state confirmation means, based on the line operation information from the line operating status monitoring means, about the passage delay of work stopped line has on the other line
A line stop influence measuring device for calculating a degree of influence of the line stop.