JPH07133534A - Maintenance control system in synthetic fiber production line - Google Patents

Abstract

PURPOSE:To provide a maintenance control system capable of carrying out an accurate and quick maintenance in a synthetic fiber production line of a draw false-twist texturing machine factory. CONSTITUTION:A data collecting device 27 relating to synthetic fiber qualities and one 28 relating to end breakage data until packaging are installed in a synthetic fiber production line which forms packages by winding on each spindle as in a spinning and winding machine factory, a draw false-twist texturing machine factory, etc., and a computer 54 which displays data on each spindle with the passage of time by calculating the ratio of quality acceptance and the ratio of full spindle formation based on data from the devices is installed to provide a maintenance control system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance place for each weight in a synthetic fiber production line in which a synthetic fiber package is formed by winding for each weight such as a spinning winder factory or a draw false twister factory. Maintenance management system for estimating

[0002]

2. Description of the Related Art For example, in a drawing false twisting machine factory, a large number of drawing false twisting machines arranged in a row and downstream equipment such as a package inspection device are arranged. The draw false twisting machine is a machine at the center of the factory. It unwinds the package from the take-up winder factory, subjects the synthetic fiber to draw false twisting, and forms the package again. The operating rate of this draw false twister factory depends on the efficient operation of the draw false twister. Therefore, it is necessary to accurately and promptly maintain the drawing false twisting machine. However, the monitoring unit provided at the machine base of the drawing false twisting machine is equipped with an indicator for data and conditions necessary for operation, various alarm devices, etc., and when an abnormality occurs in the machine, an alarm lamp is It lights up to inform you of any abnormalities.

[0003]

As described above, the drawing false twisting machine of the drawing false twisting machine factory is informed of an abnormal portion out of the set conditions, but a large amount of defective packages before the abnormal point is notified. There was a problem that occurs. Therefore, the identification of the maintenance point until the abnormality occurs depends on many years of experience, and accurate and prompt maintenance has not been performed.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to ensure accurate and prompt maintenance in a synthetic fiber production line of a draw false twister factory. It is to provide a maintenance management system that can be performed.

[0005]

[Means for Solving the Problems] A maintenance management system for a synthetic fiber production line that achieves the above-mentioned object is a synthetic fiber production line for forming a package for each weight, such as a spinning winder factory or a drawing false twisting machine factory. Is provided with a data collecting means concerning the quality of the synthetic fiber and a data collecting means concerning the yarn breakage up to the package. Based on the data from these means, the quality passing rate and the full ball forming rate are calculated, and the time elapses for each weight. A computer for displaying the information is provided.

[0006]

[Function] For each weight, the trend of quality passing rate over time is displayed,
If the acceptance rate tends to decrease and falls below the lower limit, it means that some abnormality of the mechanical element affecting the quality of the specific weight has started to occur, and it is necessary to inspect that mechanical element before the alarm is issued. You will know. Similarly, when the full ball formation rate tends to decrease and falls below the lower limit, it means that some abnormality that causes thread breakage in the specific weight is beginning to occur. You will get to know.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a maintenance management system in a drawing false twisting machine factory as a synthetic fiber production line. Before explaining the details of this block diagram, a device layout diagram and a drawing of the drawing false twisting machine factory in FIG. An example of device arrangement will be described with reference to the device arrangement diagram of one spindle of the drawing false twisting machine.

In FIG. 9, 21a, 21b and 21c are first, second and third feed rollers, 22a and 22b are primary and secondary heaters, 23 is a cooling plate and 24 is a belt type false twisting device. The synthetic yarn Y drawn from the yarn supply package P1 by the first feed roller 21a is introduced into the primary heater 22a, and the cooling plate 2
3, the second feed roller 2 through the belt type false twisting device 24
1b, the secondary heater 22b, the third feed roller 21c, and the winding package P2.
The twist formed by the belt type false twisting device 24 propagates to the first feed roller 21a and is heat-fixed by the primary heater 22a. That is, the upstream side of the belt type false twisting device 24 is the twisting side, and the downstream side is the untwisting side. In the draw false twisting machine, such a unit is used as one weight, and a large number of weights are arranged in the thickness direction of the paper.

A tension sensor 27 is provided on the downstream side of the belt type false twisting device 24 to measure the untwisting tension, and the nip of the belt type false twisting device 24 is adjusted so that the untwisting tension falls within a predetermined control range. Adjust force. In addition, the secondary heater 22b
A yarn break sensor 28 is provided downstream of the. Further, if necessary, a seam sensor 29 for detecting the tail seam portion is provided to enable linking with the raw yarn data to be processed.

The doffing of such a draw false twisting machine is automatically performed by a doffing device 25 which can travel between the primary heater 22a and the secondary heater 22b in the thickness direction of the paper. Doffing device 2
5 cuts and sucks the yarn reaching the take-up package P2, transfers the take-up package P2 to the carrier 25a and mounts the empty paper tube in the meantime, and further passes the yarn to the empty paper tube. is there. Further, the yarn supply package P1 is supplied by the creel robot 26, and tail joining is performed semi-automatically.

In FIG. 8, 30 is a draw false twisting machine, 31 is a rail of the ceiling transport vehicles 31a and 31b, 32 is a depalletizing device, 33 is a transferring device, 34 is a tray circulating device, 35 is a transferring device, and 36 is A knitting inspection / surface layer yarn knotting device, 37 is a package inspection device, and 38 is an inside labeler.

The drawing false twisting machine 30 is a normal machine No. 1 ...
. And a large number of machines are arranged in a row, and one drawing false twisting machine 30 has a span No. It is divided into 1 ... and 12 spans are accommodated in each span. Yarn supply package P for the creel 30a
1 is supplied from the depalletizing device 32 to the transfer device 26.
The first ceiling guided vehicle 31a performs the steps up to a, and the transfer device 26a
From here, the creel robot 26 performs. The supplied yarn supplying package P1 is subjected to tail joining. The package P2 doffed by the doffing device 25 is transported to the machine base end by the carrier 26a, and the second ceiling transport vehicle 31 is transported by the transfer device 33.
b. The transfer device 35 is mounted on the second ceiling carrier 32b.
The package P2 that has been conveyed to is placed on the tray of the tray circulation device 34. Then, while being placed on the tray, the knitting inspection device 36a, the surface layer yarn knotting device 36b, the package inspection device 37, and the inside labeler 38 are sequentially passed.

Next, a block diagram of the management system of the above drawing false twisting machine factory will be described with reference to FIG. A monitoring unit 30b equipped with an indicator for data or conditions required for operation, a temperature control device, various alarm devices, and a machine operation panel is provided at each base end of the drawing false twisting machine 30. The monitoring units 30b and the tension sensors 27 of the plurality of machine bases are connected to a second sub computer 52 placed on site via the second sub communication network 51, and the machine base alarm, temperature, thread breakage from the monitoring unit 30b,
Information on weight, speed ratio (VR), yarn speed, and tail splicing is displayed, and the untwisting tension (T
2) Trend, untwisting tension alarm, and rating by untwisting tension are displayed. Further, the second sub computer 52 is connected to the second host computer 54 via the main communication network 45.

The doffing device (AD) 25, the knitting inspection / surface layer yarn knotting device 36, and the package inspection device 37 communicate with the first sequencer 42 and the transfer sequencer 47 via the third sub communication network 53. The first sequencer 42 is the second
It communicates with the first sub computer 44 via the sequencer 43. The first sub computer 4 is a main communication network 45.
The main communication network 45 is connected to the second host computer 54. In addition, the second sequencer 43,
Inside labeler 38 through personal computer 55 for labeler
To control.

The data from the drawing false twisting machine is processed by the second sub computer 52, and the data shown in the drawing is used as the main communication network 4.
5 to the second host computer 54, and based on these data, the rating information in the quality information of the second host computer 54 and the untwisting tension (T2) data in the drawing false twister maintenance information are used. Is processed. From the doffing device (AD) 25, data on alarm items and number of times, and doff data on doffing position and time are output through the AD ground control panel, and based on these data, the second data is output.
It is processed into production information and AD maintenance information of the host computer 54. Alarm data is output from the knitting inspection / surface layer yarn knotting device 36 through the yarn end processing device control panel, and processed into yarn end processing device maintenance information of the second host computer 54 based on these data. From the package inspection device 37, data relating to the content of the package defect is output via the package inspection device control panel, and based on these data, the rating results of the second host computer 54 and pallet information are processed. In addition, the package inspection device 3
The data on the contents of the package defect according to 7 can be confirmed by the personal computer 56 placed on site.

The data of the doffing device 25, the knitting inspection / surface layer yarn knotting device 36, and the package inspection device 37 are the second data.
The data is selected by the sequencer 43, a part of the data of the second sub computer 52 is further selected by the second sequencer 43 through the first sub computer 44, and the necessary data is output to the labeler personal computer 55. The personal computer 55 processes the inside label information, and prints out a label in which the thread type, the date and time of the doff, the machine No., the weight No., and the rating are marked with symbols. In addition, regarding a package that is out of the rating or a defective package by the package inspection device 37, the instruction to eject is the transport sequencer 47.
Is output to.

FIG. 2 shows the untwisting tension (T2) which is the basis of the rating.
FIG. 3 is a graph showing the abnormal state of FIG. 1, which can be displayed or printed out in the second sub computer 52 of FIG. 1. In FIG. 2, O1 and U1 are control ranges,
The nip pressure of the belt type false twisting device is adjusted so that it falls within this range. Anything that exceeds this control range is abnormal,
An abnormality that is shorter than a specific time is short (S), and an abnormality that continues beyond the characteristic time is long (L). O2 and U2 are control limits. FIG. 3 is a diagram showing the occurrence frequency of the untwisting tension T2 abnormality. The short (S) and long (L) exceeding the control range O1 or U1 and the short (S) and long (L) exceeding the management range O2 or U2 are displayed in frequency. Also, control limits and control ranges O2, U2, O1, U
Packages exceeding 1 are ranked in several ranks according to their degree.

FIG. 4 is a diagram showing a display example of the untwisting tension (T2) defect report in the drawing false twisting machine maintenance information of the second host computer 54. Rank SO2 (control limit O2
About the occurrence of short S) exceeding the machine base (MC) N
o, weight (SP) No, occurrence date and time, untwisting tension (T
2) The time when the abnormality continues, the yarn speed, the speed ratio, and the temperatures of the primary heater (H1) and the secondary heater (H2) are displayed. As a result, the cause of the trouble can be estimated.

FIG. 5 is a diagram showing a display example of a package defect report of the second host computer 54. Rank S
Due to abnormal untwisting tension of O2, the rating becomes DD. This rating evaluation is performed based on the number and length (time) of SO2 and SO1 up to SO2. The package is displayed together with the doff date and time and the package ID number. As shown in the second sub-computer 52, since tail joining is confirmed, it is known which of the original yarns from the spin winding machine factory corresponds to such a defective package, and the defective package The cause can be traced back to the spinning winder factory.

FIG. 6 is a graph showing the rating performance (passing rate transition) in the production information of the second host computer 54. Specific machine (MC) No. No. 1 specific weight (SP) No. For 72, the ratio of the number of packages that passed the rating to the production package is a predetermined period (in the illustrated example, from October 12, 1993 to November 1, 1993).
It shows how it changes within 0 days. The target pass rate is 95% and the lower limit pass rate is 90%, which is below the lower limit pass rate from October 26 to November 3, indicating that some machine trouble has occurred.

FIG. 7 is a graph showing the production efficiency (transition of the percentage of full balls) in the production information of the second host computer 54. As with FIG. 6, regarding the specific weight of the specific machine base,
It shows how the ratio of the number of full packages to the production packages changes within a predetermined period without the occurrence of yarn breakage. It shows the same tendency as the rating results in FIG. 6, and is below the minimum pass rate from October 26 to November 3, indicating that some machine trouble has occurred.

In the above-mentioned embodiments, the case of a drawing false twister factory as a synthetic fiber production line has been described. But,
Regarding the take-up winder, which is a package forming machine at the take-up winder factory, a fluff sensor is provided for the synthetic yarn reaching the take-up winder to calculate the quality pass rate, and a yarn break sensor is provided to form a full ball. By calculating the rate, the maintenance location can be similarly estimated by looking at the long-term data of the quality passing rate and the full ball formation rate. In this spinning winder, the end number of the bobbin holder corresponds to the weight number.

[0023]

The maintenance management system of the synthetic fiber production line according to the present invention provides a time-dependent quality pass rate and full ball formation rate for each weight of a take-up winder or draw false twisting machine for winding synthetic fiber. With long-term data, equipment abnormalities related to the quality of each weight or thread breakage can be known in advance, equipment can be quickly and accurately maintained, and the production volume of defective packages on the synthetic fiber production line can be reduced. , The operating rate of the line can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a maintenance management system of a draw false twister factory as a synthetic fiber production line.

FIG. 2 is a graph showing an abnormal state of untwisting tension.

FIG. 3 is a diagram showing a frequency of occurrence of untwisting tension abnormality.

FIG. 4 is a diagram showing an example of an untwisting tension defect report display in a host computer.

FIG. 5 is a diagram showing a display example of a package defect report in a host computer.

FIG. 6 is a graph showing a rating performance transition in a host computer.

FIG. 7 is a graph showing a transition of production efficiency in a host computer.

FIG. 8 is a device layout diagram of a drawing false twisting machine factory.

FIG. 9 is a device layout view of one spindle of a drawing false twisting machine.

[Explanation of symbols]

 27 Tension Sensor (Quality Data Collecting Means) 28 Yarn Break Sensor (Yarn Break Data Collecting Means) 30 Stretching False Twisting Machine 45 Main Communication Network 54 Main Computer

Claims (1)

[Claims] 1. A synthetic fiber production line for winding a package for each weight, such as a spinning winder factory or a drawing false twister factory, a data collecting means for synthetic fiber quality, and a yarn breakage up to the package. A maintenance management system for a synthetic fiber production line, which is provided with data collecting means, and is provided with a computer for calculating a quality passing rate and a full ball forming rate on the basis of data from these means and displaying each weight with time.