JP3209176B2 - Spinning machine display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning machine comprising a large number of spinning units for twisting a supplied fiber bundle into yarn, and more particularly to a display system for a spinning machine for displaying yarn data such as yarn defects. About.

[0002]

2. Description of the Related Art A conventional spinning machine display system has a central control unit and a local control unit, and the central control unit processes and displays waveform data detected by the local control unit. ing. The central control unit has a quality management unit and an analysis unit, and can perform management of yarn quality during production and analysis and management of maintenance work.
This quality control unit manages the yarn quality during spinning, and when the yarn defect distribution data obtained from the waveform data exceeds a predetermined reference value, causes the monitor to display the weight No. of the yarn defect occurrence weight and its cause. It has become. The analysis unit manages the operation and operation status of the spinning machine, and displays a long-term management chart such as operability, quality, and maintenance on a monitor. The local control device is provided for each spinning unit, and detects the waveform data for each spindle (each spinning unit).

[0003]

However, the conventional spinning machine display system sequentially processes waveform data obtained for each local control device (for each spindle) on the central control device side. Waveform data could not be processed. Along with this, it was not possible to simultaneously display a plurality of the yarn defect distribution data processed by the central controller in accordance with the clearing limit, so that the thickness and length of the actually cut yarn defect part (yarn defect distribution data There is a problem in that it cannot be confirmed whether or not) accurately corresponds to the clearing limit.

Accordingly, the present invention has been made in view of the above problems, and has as its object to clear the thickness and length (yarn defect distribution data) of the actually cut yarn defect portion. Provided is a spinning machine display system capable of confirming whether or not it accurately corresponds to a ring limit.

[0005]

According to the first aspect of the present invention,
A local controller for controlling one or more spinning units;
A display system of a spinning machine having a central control device connected to the local control device, wherein the waveform is provided from the clearer head provided in the local control device and detecting a thickness of a spun yarn in each spinning unit. A yarn defect determining means for determining a yarn defect to be cut based on the data and a predetermined first determination criterion, and creating first data relating to a maximum value and a length of the cut yarn defect; Display means provided in the apparatus, having a thickness axis and a length axis, and displaying, in addition to the first criterion, a clearing limit indicated by a line indicating a limit of a yarn defect to be cut which is assumed in a rectangular wave shape, A first value relating to the maximum value of the length and thickness of a number of yarn defects cut by the yarn defect determining means.
Sending the data to the central controller and cutting the first data into the clearing limit of the display means;
Characterized by being configured to display superimposed as bets.

Accordingly, the waveform data can be processed for each local controller, and a plurality of yarn defect distribution data can be displayed at the same time in accordance with the clearing limit. Therefore, the maximum value of the thickness of the actually cut yarn defect portion can be obtained. It is possible to know whether or not the length (first data) accurately corresponds to the clearing limit. Further, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and the length (first data) of the thickness of the actually-cut yarn defect portion, the number of cuts can be reduced, and the operating efficiency can be reduced. Can be improved.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the yarn defect determining means does not cause the remaining yarn defect to be cut based on the waveform data and a predetermined second determination criterion. with judges, most of the thickness of the residual yarn defect
Second data relating to a maximum value and a length are created, and the display unit displays the second data as a non-cut point for the clearing limit so as to be distinguishable from the first data. . This, in effect,
Since the maximum value and length (second data) of the yarn thickness not cut but near the cutting level (non-defective part) can also be displayed,
The maximum value and length of the thickness of the actually cut yarn defect (1st
Data) accurately corresponds to the clearing limit. Further, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and length of the thickness of the yarn defect portion and the non-defect portion, the number of cuts can be reduced and the operation efficiency can be improved.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the clearing limit of the display means may be a thickness of a yarn defect in a plus direction with respect to the length axis. A second limit indicating a thickness limit of a yarn defect in a minus direction with respect to the length axis.
It is characterized by two limits. This allows
It is possible to more clearly know whether or not the thickness and length of the actually cut yarn defect portion accurately correspond to the clearing limit. In addition, the thickness of the yarn defect part and the non-defect part
Since the reference value of the yarn defect determining means can be adjusted in accordance with the distribution of the maximum value and the length, the number of cuts can be reduced and the operating efficiency can be further improved.

In a display system for a spinning machine, in addition to the configuration according to any one of claims 1 to 3, the yarn defect judging means creates first data for each type of yarn defect. The display means displays the first data for each type of yarn defect superimposed on the clearing limit. This allows a plurality of types of first data to be displayed at the same time, so that it is necessary to determine whether the maximum value and length of the actually cut various yarn defect portions accurately correspond to the clearing limit. You can know more clearly. Also, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and length of the thickness of the yarn defect portion and the non-defect portion, the number of cuts can be reduced, and the operating efficiency can be further improved. .

In a display system for a spinning machine, in addition to the configuration according to any one of claims 1 to 3, the yarn defect judging means may include a first data and a second data for each type of yarn defect. Data is created, and the display means displays the first data and the second data for each type of yarn defect superimposed on the clearing limit. Maximum Accordingly, simultaneously because it can display the first data and second data of a plurality of types, actually cut various yarn defect portion of the thickness
It is possible to more clearly know whether the value / length accurately corresponds to the clearing limit. Also, according to the distribution of the maximum value and length of the thickness of the yarn defect part and the non-defect part,
Since the reference value of the yarn defect determining means can be adjusted, the number of cuts can be reduced, and the operating efficiency can be further improved.

In a display system for a spinning machine, in addition to the configuration according to any one of claims 1 to 3, the display means may display the first data and the second data for each type of yarn defect. The weight is displayed for each weight so as to overlap the clearing limit. As a result, a plurality of types of first data and second data can be displayed for each weight, so that the maximum values and lengths of various actually cut yarn defect portions accurately correspond to the clearing limits. It is possible to know for each weight whether or not it is doing. In addition, the thickness of the yarn defect part and the non-defect part
Since the reference value of the yarn defect determining means can be adjusted for each local control device in accordance with the distribution of the maximum value and the length, the number of cuts can be reduced and the operating efficiency can be further improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Spinning equipment, the central control device 2 of FIG. 2
A number of spinning units u shown in FIG.
In the spinning unit u, as shown in FIG. 1 , a draft section 2, a pneumatic spinning nozzle 3, a delivery roller 6, a clearing device 8, and a winding section 9 are arranged in series from the upstream side to the downstream side.

The draft section 2 includes a back roller pair 1
0, middle roller pair 1 with apron belt 12
1, a front roller pair 13. Among the draft roller pairs, the middle roller pair 11 and the front roller pair 13 are provided with their bottom rollers on a line shaft common to each unit, and all units are driven at the same time. Driving can be stopped for each unit.

The pneumatic spinning nozzle 3 is arranged downstream of the front roller pair 13 and injects compressed air from a compressed air injection hole to generate a swirling airflow. As a result, a binding yarn Y (spun yarn) is formed from the fiber bundle S stretched in the draft portion 2. The binding yarn Y has a structure in which a group of fibers arranged substantially linearly is used as a core fiber, and a wound fiber is spirally wound around the core fiber.

The air spinning nozzle 3 is connected to a pressure supply source for supplying compressed air via an air supply pipe, a mechanical valve, and the like (not shown), so that the supply of the compressed air can be adjusted by operating the mechanical valve. ing.
The compressed air holes are inclined toward the yarn running direction, which is the downstream side, so that a suction airflow is easily generated near the introduction side of the air spinning nozzle 3.

A nip roller 7 is arranged on the delivery roller 6 so that the delivery roller 6 can come into contact with the delivery roller 6. The nip roller 7 is urged in the clockwise direction in the figure by a spring (not shown) so as to send out the binding yarn Y (spun yarn) while pressing against the delivery roller 6.

The above-mentioned clearing device 8 is adapted to measure the thickness (change in cross section) of the binding yarn Y, and to transmit a clearer evaluation board 19 to be described later from the clearer head 8a.
(See FIG. 2 ).

The winding section 11 is provided with a winding package P while traversing the binding yarn Y with a traverse device (not shown).
It is designed to be wound up. In addition, winding package P
Is rotatably supported by a cradle arm, and is rotated by being pressed against a friction roller 17.

Next, a main part of the spinning machine 1 according to the embodiment of the present invention will be described. As shown in FIG. 2 , the display system 23 of the spinning machine includes a central control device (master side) 20 and a plurality of local control devices (slave side) 4. The local control device 4 controls the clearer head 8a. The distribution (first data) of the yarn defect is displayed on the monitor 5 constituting the display means by digitally processing the waveform data.

Each of the local controllers 4 has a clearer evaluation board 19 (yarn fault judging means) to which four clearer heads 8a and four unit control boards 18 are connected. Is to be evaluated.

The clearer evaluation base 19 includes a ROM, a C
It has a PU, an A / D converter, and a RAM, digitally processes analog waveform data, executes a yarn defect determination subroutine, determines the type of yarn defect such as a weak yarn, a thick yarn, or a slab. The display distribution data is created.

The above-mentioned ROM stores the criterion for determining each yarn defect, and stores two reference values of a detection level as a second criterion and a cutting level as a first criterion. I have. The yarn defects include a slab (S defect), an L defect, and a T defect in addition to the weak yarn (LL defect) and the thick yarn (NEP defect). For example, the L defect (+ 30%, 100%)
The determination criteria for cm) are that the detection level is + 20% and the cutting level is + 30%.

The CPU fetches analog type waveform data detected from the clearer head 8a and executes A / A
The data is converted into a digital signal by a D converter, and a moving average value for each yarn defect is calculated from the digital signal. Next, each moving average value is compared with the detection level, and when each moving average value exceeds the detection level, it is further compared with the cutting level, and when the moving average value does not exceed the cutting level,
The remaining defect distribution data (second data) is calculated and stored in the RAM. The remaining defect distribution data includes the yarn length of the portion exceeding the detection level and the maximum value (%) of the thickness in that section (yarn length). The measurement of the maximum value of the yarn length and the thickness is performed by starting counting from the time when the yarn exceeds the detection level.

On the other hand, when the moving average value for each defect exceeds the detection level and further exceeds the cutting level, defect distribution data (first data) is calculated and stored, and the yarn defect data is stored in the unit control board 18. A signal is to be transmitted. The defect distribution data includes the length of the cut yarn defect portion and the maximum value (%) of the thickness of the yarn defect portion.
The measurement of the maximum value of the length and the thickness is performed by starting counting from the time when the yarn exceeds the cutting level. afterwards,
The type of the cut defect is determined, and the distribution data for display is created based on the result. The distribution data for display includes the residual defect distribution data (second data) and the defect distribution data (first data) described above.

As described above, each local control device 4
The first and second judgment criteria for each yarn defect are compared with each defect moving average value calculated from the waveform data, and if each defect moving average value corresponds to any one of the second judgment criteria, the thread A yarn defect signal (for example, an LL defect signal, etc.) corresponding to the defect is output to the unit control board 18 and display distribution data (first data / second data) is created, and the display distribution data is sent to the central controller. Is to be sent. Upon receiving the yarn defect signal, the unit control board 18 causes the spinning unit U to perform predetermined processing (such as yarn cutting) according to the yarn defect signal. If each defect moving average does not correspond to any of the second criteria,
The evaluation is performed sequentially by taking in the waveform data of the next section.

Each of the local control devices 4 is connected to the central control device 20 via communication lines 21 and 22, and receives a display distribution data transmission command from the central control device 20 via the communication line 21. The distribution data for display with respect to the weights and the types of the defects that have been set are transmitted to the central controller 20 via the communication line 22 by 64 points each.

The central controller 20 stores the latest 64 distribution data for display for each type of defect. The central control unit 20 has a monitor 5
It is provided, as shown in FIG. 5, and displays the display distribution data and clearing curves (clearing limit). The vertical axis of the monitor 5 indicates the thickness of the yarn, and the horizontal axis indicates the length of the yarn. The clearing curve is a curve indicating the limit of the yarn defect to be cut. The first curve indicates the thickness limit of the yarn defect in the plus direction with respect to the horizontal axis (length axis), and the first curve indicates the limit with the horizontal axis. And the second curve indicating the thickness limit of the yarn defect in the minus direction.

The operation of the display system 23 of the spinning machine in the above configuration will be described with reference to the drawings. As shown in FIG. 1 , the sliver S (fiber bundle) is wound in a coil shape, and the rollers 10, 11.
At 13, they are sequentially drafted while being pressed against each other, and are ejected by the swirling airflow from the compressed air injection holes.

The sliver S (fiber bundle) is formed into a binding yarn Y by the draft part 2 and the air spinning nozzle 3, and is drawn out by the delivery roller 6 and the nip roller 7 to the downstream side. Thereafter, the binding yarn Y is bent by the guide rod body 16,
After passing through the clearing device 8, it is wound on the winding package P while being traversed.

During the above winding process, the clearing device 8 of each spinning unit U constantly measures the state of the binding yarn Y,
The analog waveform data is transmitted to the clearer evaluation board 19. As shown in FIG. 2, the clearer evaluation foundation 19
When receiving the waveform data from the clearer head 8a of each clearing device 8, it performs digital processing and
Of yarns such as weak yarns, thick yarns and slabs. Next, the evaluation of the yarn defect by the clearer evaluation base 19 will be described.

As shown in FIG. 3 , the clearer evaluation base 1
9 receives the waveform data (S1), converts it into a digital signal by an A / D converter (S2), and executes a thread defect determination subroutine (S3). As shown in FIG. 4 , a moving average for NEP defects is calculated from the digital signal (S
4) Compare with the NEP defect detection level (S5). NEP
When the moving average value for the defect exceeds the NEP defect detection level (S5, YES), the yarn length measurement is started, and the yarn length of the portion exceeding the NEP defect detection level is measured.

Next, the moving average value for the NEP defect is compared with the cutting level for the NEP defect (S6). When the moving average value for NEP defect does not exceed the cutting level for NEP defect (S6, N
O), NEP The yarn length of the portion exceeding the defect detection level and the maximum value (%) of the thickness in that section (yarn length) are NEP.
The data is stored in the RAM as the residual defect distribution data for the defect (S8).

When the residual defect distribution data for the NEP defect is stored, a moving average value for the S defect is calculated from the digital signal (S9) and compared with the detection level for the S defect (S10).
When the moving average value for the S defect exceeds the detection level for the S defect (S10, YES), the yarn length measurement is started, and the yarn length of the portion exceeding the detection level for the S defect is measured.

Next, the moving average value for the S defect is compared with the cutting level for the S defect (S11). If the moving average value for the S defect exceeds the cutting level for the S defect (S11, YES),
The S defect distribution data is stored in the RAM (S12). still,
The S defect distribution data includes the length and thickness of the cut yarn defect.

When the S defect distribution data is stored in the RAM, as shown in FIG. 3 , an S defect signal is transmitted to the unit control board 18 corresponding to the clearer head 8a that has output the waveform data. Upon receiving the S defect signal, the unit control board 18 outputs a cutter operation signal to the cutter solenoid to cut the binding yarn Y (S29).

Thereafter, the clearer evaluation board 19 determines the type of the cut defect (S30), reads out the remaining defect distribution data for the NEP defect, the remaining defect distribution data for the S defect, and the S defect distribution data from the RAM and displays them. The distribution data is created (S31).

The distribution data for display includes the remaining defect distribution data for NEP defects (the yarn length of the portion exceeding the NEP defect detection level and the maximum value of the thickness (%) in the section (thread length). )) And the remaining defect distribution data for the S defect (the yarn length of the portion exceeding the detection level for the S defect and its section (yarn length)
, And the S defect distribution data (the length and thickness of the cut yarn defect portion).

As shown in FIG. 2, when a display distribution data transmission command is received from the central control device 20 via the communication line 21, the display distribution data specified via the communication line 22 is transmitted to the central control device. 20 (S3
2). Upon receiving the distribution data for display (S33), the central controller 20 stores the distribution data for display (S3).
4), as shown in FIG. 5 , non-cut points 表 す representing residual defect distribution data for NEP defects and cut points を representing S defect distribution data are displayed on the monitor (S35).

Thus, the operator can know the distribution of the cut points 表 す representing the respective defect distribution data and the non-cut points 各 representing the remaining defect distribution data for the defect. It is possible to know that there is a cut point ● inside the two curves) and a non-cut point ○ outside the cut area (outside the first and second curves), and change the cutting level of each yarn defect. Can be used as a guide when doing so.

On the other hand, if the NEP defect moving average does not exceed the NEP defect detection level in S5 of the thread defect determination subroutine (S5, NO), the S defect moving average is calculated (S9). . If the moving average value for the S defect does not exceed the detection level for the S defect in S10 (S10, NO), the moving average value for the L defect is calculated (S14). As described above, when the moving average value for each defect of NEP, S, L, and T does not exceed the detection level for each defect (S5, S10, S15, S20), the next moving average value for the defect is calculated. The evaluation of the detection level for each (S, L, T, LL) defect is sequentially performed. In S25, L
If the moving average value for the L defect does not exceed the detection level for the LL defect (S25, NO), the process proceeds to S1.

If the moving average value for the NEP defect exceeds the cutting level for the NEP defect in S6 (S6, Y
ES), NEP defect distribution data is stored in RAM (S
7) The process proceeds to S29. Similarly, when the moving average value for each defect of S, L, T, and LL exceeds the cutting level for each defect (S11, S16, S21, S26, YES), each defect distribution data is stored in the RAM (S11). S12 ・ S17 ・
(S22 / S27), the process proceeds to S29.

Although the actual defect waveform has various patterns, the clearing curve shown in FIG. 5 is set on the assumption that the defect waveform is a rectangular wave-shaped slab. Is not necessarily located in the cut area, and the non-cut point ○ is not necessarily located in the non-cut area.
Therefore, along with the clearing curve,
It is effective to display not only the non-cut point ○ but also the non-cut point ○.

[0043]

According to the first aspect of the present invention, there is provided a display system for a spinning machine having a local control device for controlling one or more spinning units, and a central control device connected to the local control device. The local controller is provided to determine a yarn defect to be cut based on waveform data taken from a clearer head for detecting the thickness of the spun yarn in each spinning unit and a predetermined first judgment criterion, and to determine the cut yarn. A yarn defect determining means for creating first data relating to the maximum value and length of the thickness of the defect, and a yarn axis determining unit provided in the central control unit, the axis having a thickness axis and a length axis; clear and display means for displaying a ring limit, the length and thickness of the plurality of yarn defect cut by the yarn defect determining means for indicating the limit of the yarn defect to be cut which is separately assumed rectangular waveform by line Sends first data regarding the maximum value in the central control unit, which is said to the first data to the clearing limit to display sleeping heavy <br/> as the cut-point configuration of the display unit.

Thus, the waveform data can be processed for each local control device, and a plurality of yarn defect distribution data can be displayed simultaneously in accordance with the clearing limit, so that the maximum value of the thickness of the actually cut yarn defect portion can be obtained. -It is possible to know whether or not the length (first data) accurately corresponds to the clearing limit. Further, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and the length (first data) of the thickness of the actually-cut yarn defect portion, the number of cuts can be reduced, and the operating efficiency can be reduced. This has the effect of being able to improve.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the yarn defect determining means does not cause the remaining yarn defect to be cut based on the waveform data and a predetermined second determination criterion. with judges, most of the thickness of the residual yarn defect
Second data relating to a maximum value and a length are created, and the display unit displays the second data as a non-cut point with respect to the clearing limit so as to be distinguishable from the first data. Thus, in fact, it has not been cut off level near (non disadvantages portion) of the yarn thickness of the
Since the maximum value and length (second data) can also be displayed, whether the maximum value and length (first data) of the actually cut yarn defect portion accurately corresponds to the clearing limit is determined. This has the effect of being able to know more clearly. Further, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and length of the thickness of the yarn defect portion and the non-defective portion, the number of cuts can be reduced and the operation efficiency can be improved. .

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the clearing limit in the display means may be a thickness of a yarn defect in a plus direction with respect to the length axis. A second limit indicating a thickness limit of a yarn defect in a minus direction with respect to the length axis.
Consists of two limits. As a result, it is possible to more clearly know whether or not the maximum value / length of the actually cut yarn defect portion accurately corresponds to the clearing limit. Also, since the reference value of the yarn defect determining means can be adjusted according to the distribution of the maximum value and length of the thickness of the yarn defect portion and the non-defect portion, the number of cuts can be reduced and the operation efficiency can be further improved. Play.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a spinning unit.

FIG. 2 is a diagram illustrating a display system of the spinning machine according to the embodiment.

FIG. 3 is a flowchart illustrating an operation of the display system.

FIG. 4 is a flowchart illustrating an operation of the display system.

FIG. 5 is a distribution diagram of defect distribution data and residual defect distribution data displayed on a monitor.

[Explanation of symbols]

 2 Draft part 3 Pneumatic spinning nozzle 4 Local control device 5 Monitor 6 Delivery roller 7 Nip roller 8 Clearing device 9 Winding part 10 Back roller pair 11 Middle belt pair 12 Apron belt 13 Front roller pair 14 Roller 15 Roller 16 Thread guide 17 Friction roller Reference Signs List 18 spinning unit control base 19 clearer evaluation base 20 central controller 21 communication line 22 communication line 23 spinning machine display system P winding package U spinning unit

Claims (3)

(57) [Claims] 1. A spinning machine display system comprising: a local control device for controlling one or more spinning units; and a central control device connected to the local control device, wherein the display system is provided in the local control device. The yarn defect to be cut is determined based on the waveform data taken from the clearer head for detecting the thickness of the spun yarn in the spinning unit and a predetermined first determination criterion, and the maximum value of the thickness of the cut yarn defect is determined. A yarn defect determining means for creating first data relating to the length; a cutout provided in the central control device, having a thickness axis and a length axis, which is assumed to have a rectangular wave shape separately from the first determination criterion. and display means for displaying the clearing limit indicates the limit of the yarn defect to be <br/> cross a line, first for the maximum value of the length and thickness of the plurality of yarn defect cut by the yarn defect determining means Sends data to the central control unit, the spinning machine display system being characterized in that so as to display the superimposed said first data to the clearing limit as the cut point of the display means. 2. The yarn defect judging means judges a remaining yarn defect that does not lead to cutting based on the waveform data and a predetermined second judgment criterion, and determines a maximum value of the thickness of the remaining yarn defect. > And the second data relating to the length is created, and the display means, for the clearing limit,
The display system according to claim 1, wherein the second data is displayed as a non-cut point so as to be distinguishable from the first data. 3. The clearing limit in the display means includes a first limit indicating a thickness limit of a yarn defect in a plus direction with respect to the length axis, and a yarn defect in a minus direction with respect to the length axis. The display system for a spinning machine according to claim 1 or 2, wherein the second limit indicates two of the thickness limits.