JPH07133535A - Maintenance system for draw false-twister - Google Patents

Abstract

PURPOSE:To provide a maintenance system enabling proper and quick maintenance to be performed at each spindle of a draw false-twister. CONSTITUTION:Each spindle of a draw false-twister 30 is equipped with an untwisting tension detective means 27, and a computer 54 is provided to evaluate the degree of variations in untwisting tension and output the maintenance information concerning defective spindle(s), thus ensuring defects of specific spindle(s) to be identified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management system for managing a weight unit of a draw false twisting machine.

[0002]

2. Description of the Related Art 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, 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 provided. It lights up to inform you of any abnormalities.

[0003]

However, the operation data displayed by the monitoring unit is displayed on the entire machine base or 12 units.
The data is not displayed because it is done for each span unit where the weights are collected and the operation for each weight is managed. Therefore, even if there is a quality abnormality in the specific weight that does not lead to yarn breakage due to wear of the false twisting device in each weight, it is not possible to know it and a large number of defective packages occur. There was a problem that it would end up.

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 provide a management system capable of performing accurate and quick maintenance in each weight of a draw false twisting machine. To provide.

[0005]

[Means for Solving the Problems] A management system for a drawing false twisting machine that achieves the above object is provided with untwisting tension detecting means in each weight of the drawing false twisting machine to evaluate the degree of fluctuation of the untwisting tension. A computer is provided which outputs management information regarding defective weights.

[0006]

[Function] Focusing on the fact that abnormalities of each device in the drawing false twisting machine cause quality abnormalities and the quality abnormalities appear as untwisting tension abnormalities, the untwisting tension detecting means is provided in each weight to check the fluctuation of the untwisting tensions. If a computer that evaluates and manages the degree is provided, the failure of the specific weight will be known. Then, when the untwisting tension is abnormal, the data related to the weight is taken in and the cause of the abnormality is estimated.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of the management system of the entire factory including the drawing false twisting machine. Before explaining the details of this block diagram, the factory layout of the drawing false twisting machine of FIG. 8 and the drawing false twisting machine of FIG. An example of the device arrangement will be described with reference to the device arrangement diagram of one 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. There are 12 spindles in each span. The supply of the yarn supply package P1 to the creel 30a is performed by the first ceiling transport vehicle 31a from the depalletizing device 32 to the transfer device 26a, and by the creel robot 26 from the transfer device 26a. The supplied yarn supplying package P1 is subjected to tail joining. The package P2 doffed by the doffing device 25 is conveyed to the machine base end by the carrier 26a, and is transferred to the second ceiling transfer vehicle 31b by the transfer device 33. The package P2 transported to the transfer device 35 by the second ceiling transport vehicle 32b 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 for the entire factory including the above-mentioned drawing false twisting machine 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. Monitoring unit 30 for multiple machines
b and the tension sensor 27 are connected to a second sub computer 52 placed on site via the second sub communication network 51,
Information about the machine stand alarm, temperature, yarn breakage, weight, speed ratio (VR), yarn speed, tail joining from the monitoring unit 30b is displayed, and the twisting tension (T2) tendency and the twisting tension alarm from the tension sensor 27 are displayed. , Rating by untwisting tension is 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 is a graph showing an abnormal state of the untwisting tension (T2) which is the basis of management and rating for each weight.
It can be displayed or printed out on the second sub-computer 52 of. In FIG. 2, O1 and U1 are control ranges, and the nip pressure of the belt type false twisting device is adjusted to fall within this range. Abnormalities that exceed this control range are abnormal. Abnormalities that are shorter than a specific time are short (S), and abnormalities that continue beyond the characteristic time are long (L).
O2 and U2 are control limits. FIG. 3 is a diagram showing the occurrence frequency of the untwisting tension T2 abnormality. Short (S) and long (L) exceeding control range O1 or U1, management range O2
Alternatively, short (S) and long (L) exceeding U2 are displayed in frequency. Also, the control limit or control limit O2
Packages exceeding U2, O1, U1 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, it is possible to estimate the occurrence of a mechanical cause of the processed yarn of rank SO2 (for example, abnormal wear of the belt of the false twisting device, stain of the primary heater). It is important that this estimation can be performed for each weight. This display is also displayed on the on-site sub-computer 52 in FIG. 1 and can be monitored both on-site and in the central control room. Thus, the untwisting tension (T
2) It is important to capture and display the data related to the weight (SP) at the time of abnormality.

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. In this rating, SO2 and SO1 up to SO2
Evaluate the number of times and length (time). And for that package, doff date and time, package ID
Displayed with the number. The second sub computer 5
As shown in Fig. 2, since the tail splicing has been confirmed, it has been determined which of the yarns from the spinning winder factory corresponds to such a defective package, and the cause of the defective package is determined by the spinning winder. Can be traced back to the 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.

[0023]

The management system of the drawing false twisting machine of the present invention comprises:
The untwisting tension detecting means is provided in each weight of the drawing false twisting machine, and a computer is provided which evaluates the degree of variation in untwisting tension and outputs management information about defective weights. By knowing the defect, it becomes possible to manage each weight, and the weight unit can be quickly and accurately managed.

[Brief description of drawings]

FIG. 1 is a block diagram of an entire factory management system including a drawing false twisting machine.

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 a display example of an untwisting tension defect report for each weight in the 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 (untwisting tension detecting means) 30 Stretching false twisting machine 45 Main communication network 54 Main computer

Claims (1)

[Claims] 1. Management of a draw false twisting machine provided with a untwisting tension detecting means for each weight of the draw false twisting machine and provided with a computer for evaluating the degree of fluctuation of the untwisting tension and outputting management information on a defective weight. system.