JP2002212844A - Control system for fiber machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly functional control system which improves the efficiency of wiring works in input-output devices and control devices and further improves extendability by converting a communication line into a radio communication line. SOLUTION: This control system of the fiber machine comprises an integrating board 60 disposed for each group comprising a prescribed number of spindles, a control device 40 disposed for each spindle, a radio slave 6Ms disposed in the integrating board 60, a radio master 4Mm disposed in the control device 40, and a radio network Mn1 between the radio slave 6Ms and the radio master 4Mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of first input / output devices such as a switch and a lamp for each weight, and a second input / output device for a thread state detection sensor such as a tension sensor. The present invention relates to a control system for a textile machine which is controlled for each group of weights.

[0002]

2. Description of the Related Art Conventionally, a textile machine provided with a plurality of first input / output devices such as operation switches and display lamps for each of a plurality of weights and a second input / output device for a yarn state detection sensor such as a tension sensor. Means that these input / output devices are directly connected to one control device or are connected via a relay board.
Connected to one control unit.

[0003]

However, in the above prior art, when these input / output devices are directly connected to one control device, a large number of long wirings are provided between the input / output devices and the control device. Is required. In addition, even when the relay board is used, the number of physical wires must be reduced between the relay board and the control device because a multi-core cable with the number of these input / output units is used. Is not done. In addition, when adding these input / output devices,
It is necessary to increase the number of input / output interfaces such as photocouplers on the connection side of the wiring by an additional amount. For these reasons, conventionally, there have been problems that the number of wiring steps is large and the wiring operation becomes extremely complicated, and that the expandability with respect to the addition of these input / output devices is low.

In view of the above circumstances, an object of the present invention is to increase the efficiency of wiring work and improve expandability of a large number of input / output devices provided for each weight in a textile machine. It is to provide a functionalized control system.

[0005]

In order to achieve the above object, a control system for a textile machine according to claim 1 is provided for each group of a predetermined number of weights, and the input system provided for each weight is provided. An aggregation board that aggregates data related to output devices,
A control device that is an upper layer of the aggregation board; a wireless slave provided on the aggregation board; a wireless master provided on the control device; and a wireless network of the wireless slave and the wireless master. Things.

According to the first aspect, since the communication between the aggregation board and the higher-level control device is performed by a wireless network, a communication line connecting the aggregation board and the higher-level control device is not required, and each input line is not required. Each signal line from the output unit has a short length to the aggregation board. In other words, the wiring required is as short as possible connecting each I / O unit and the aggregation board, and there is no communication line between the aggregation board and the higher-level control device, which has been a long route, making wiring simple. Will be able to do it. In addition, by adopting a wireless network between the aggregation board and a higher-level control device, it is possible to easily change the number of communication data, newly install communication data, and the like, thereby improving expandability and flexibility.

A control system for a textile machine according to a second aspect of the present invention is provided with an input / output unit provided for each weight and a group of a predetermined number of weights. An aggregation board that aggregates the data, a wireless slave provided in the input / output device, a wireless master provided in the aggregation board, and a wireless network of the wireless slave and the wireless master. .

According to the second aspect, since the communication between the aggregation board and each of the input / output units is performed by a wireless network, a communication line connecting the aggregation board and each of the input / output units is not required. It is only necessary to provide a communication line connecting the control device and the host controller. That is, many communication lines between the aggregation board and each input / output unit are eliminated, and wiring can be easily performed. In addition, by adopting a wireless network between the aggregation board and each input / output unit, it is possible to easily change the number of communication data, newly establish communication data, etc., thereby improving expandability and flexibility.

According to a third aspect of the present invention, in the control system for a textile machine according to the second aspect, the input / output unit converts the analog signal into a digital signal and a detection head that generates an analog signal according to a yarn state. A thread condition monitoring sensor including an analog / digital converter, which transmits a digital signal indicating the thread condition to a higher-order aggregation board via the wireless slave.

According to a third aspect of the present invention, since the yarn state monitoring sensor signal is converted into a digital signal and transmitted to a higher-level aggregation board via a wireless slave, the data signal is transmitted to the higher-level aggregation board in real time via the wireless slave. In addition to the above, the operation according to the second aspect can be obtained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a wiring structure in a draw false twister will be described below with reference to the drawings. FIG. 1 is a schematic diagram of a draw false twister, FIG. 2 is a perspective view of a main part showing a control system including a wireless network,
FIG. 3 is a configuration diagram of a control system including the wireless network.

First, a schematic configuration of the draw false twisting machine in the present embodiment will be described. In FIG. 1, a draw false twister 1
Guides the filament yarn Y of, for example, a synthetic fiber unwound from the yarn supply package 6 to the first feed roller 11,
In the process of reaching the second feed roller 12 via the texturing heater 3, the cooling plate 4, and the false twisting device (nip twister) 5, the filament yarn is stretched and heat-set while the filament yarn Y is stretched. The Y is subjected to bulk processing, further subjected to an oiling process by an oiling roller 9 via a setting heater 8 and a third feed roller 13, and wound around a winding package 7. Between the oiling roller 9 and the third feed roller 13, a later-described feeler 2 is provided.
2 and a cutter 14 are arranged. The symbol W
Is a work space for workers.

In this embodiment, the yarn supply package 6
The weights reaching the winding package 7 are arranged side-by-side symmetrically with respect to the center line C, and these two weights are arranged in a large number of weights in the front and back direction of the drawing, for example, 12 weights and one span (an example of one group).
Is configured. In an actual drawing false twisting machine, many spans are arranged and operated, all of which are controlled by one host computer 50.

The quality of the filament yarn Y false-twisted by the false twisting device 5 of each weight in the drawing false twisting machine 1 varies depending on the rotation speed of the drive motor 10 of the false twisting device 5.
In order to keep the quality of the twisted yarn uniform, the drive motor 10
The rotation speed (the number of rotations) is accurately controlled to a predetermined value based on a command signal from the host computer 50, and
It is necessary to accurately monitor the rotation speed of the drive motor 10 of each weight.

The false twisting device 5 includes a pair of twisting belts 2, 2 arranged in an X-shape in a side view so as to sandwich the filament yarn Y, and a driving motor 10 for each of the twisting belts 2.
10. As the drive motor 10, for example, a DC briless motor can be used. False twisting device 5
Is inclined with respect to the thread path. Two twisted belts 2,
The yarns Y to be conveyed are twisted at a high speed by driving the yarns 2 at a high speed so as to move downstream from each other. In addition, as the false twisting device 5, a friction type in which the yarn Y is brought into contact with a plurality of rotating disks to impart a twist can be employed.

In the present draw false twisting machine 1, as will be described in detail later, a wireless slave 6 provided on each first aggregation board 60 is provided.
Ms, a wireless master 4Mm provided in the master controller 40 above the first aggregation board 60, and a first wireless network Mn1 of these wireless slaves 6Ms and the wireless master 4Mm.
0 and the wireless master 4 of the master controller 40 above the motor controller 30.
A second wireless network Mn2 with Mm is provided.

A third wireless network Mn3 of the wireless slave 7Ms provided on the second aggregation board 70 and the wireless master 4Mm is also provided. A4 is a transmitting antenna, and a3, a6, and a7 are receiving antennas. FIG.
Although a plurality of transmission antennas 4A are illustrated to assist the understanding of the above, one is actually provided.

That is, the mutual data communication between the master control device 40, each of the first integrated boards 60, the second integrated board 70, and each of the motor control devices 30 is wireless, and wiring is omitted. Therefore, the signal lines S1 to S3 connecting the first input / output unit and the first aggregation board, the signal lines S1 to S3 connecting the second input / output unit and the second aggregation board, and the power system wiring connected to each input / output unit may be prepared. As a result, the number and amount of wiring are drastically reduced, and the wiring structure can be simplified and (wiring reduction) can be performed.

As shown in FIGS. 2 and 3, the individual control of each drive motor 10 in such a single spindle drive system is performed by a plurality of motor control devices 30 (one of which is shown in FIG. 2).
Done by The motor control device 30 is provided for each weight, and is configured to accurately and synchronously rotate the paired drive motors 10. Then, each motor control device 30 for one span has a communication function and is controlled and managed by a master control device 40 at a higher rank. Further, a plurality of master control devices 40 provided for each span have a higher rank. It is configured to be integratedly managed by the computer 50. As shown in FIG. 1 and FIG. 2, a motor duct 15 having a rectangular tube shape is provided in the vicinity of each drive motor 10 along the machine base longitudinal direction, and each motor control device 30 is provided in the motor duct 15. Is housed.

Each motor control device 30 has a wireless communication function, and is connected to the master control device 40 by a second wireless network Mn2 and to each drive motor 10 by a signal line S1. When any one of the feed rollers 11 to 13 is driven by a single spindle, a motor duct accommodating a motor control device for the drive motor may be added in the same manner as described above.

On the other hand, as shown in FIGS. 1 and 2, each weight of the drawing false twisting machine 1 is provided with an operation switch 20 for the operator to switch between driving and stopping the motor, and an LED or an alarm indicating that the motor is being driven or stopped. A first input / output device (I / O) such as a lamp 21 such as an LED that lights up when an error occurs and a feeler 22 that is a yarn presence / absence detector is provided. One span of the first input / output units 20 to 22 of each of these weights is connected to one first integrated board 60 via a plurality of signal lines S2. The first aggregation board 60 and each signal line S2 are housed in a rectangular tubular switch duct 23 extending in the machine longitudinal direction similarly to the motor duct 15.

In the present embodiment, the switch duct 23 also serves as a mounting member for the switch 20 and the lamp 21. The first aggregation board 60 has a wireless communication function, is connected to the master control device 40 via the first wireless network Mn1, performs wireless communication with the master control device 40, and performs each first input. An ON / OFF signal is transmitted between the output units 20 to 22 at an I / O level.

Each of the weights of the drawing false twisting machine 1 is provided with a false twisting device 5.
Sensor (an example of a yarn state monitoring sensor) for continuously detecting the state of the filament yarn Y near the downstream side of the yarn 25
Are provided as second input / output units. One span of the tension sensor 25 (second input / output unit) of each of these weights is connected to one second aggregation board 70 via a plurality of signal lines S3. I have. Tension sensor 25 (second input / output device)
Generates and outputs an analog signal corresponding to the tension of the yarn Y. The second aggregation board 70 and each signal line S <b> 3 are housed in the sensor duct 26 which has a rectangular tubular shape and extends in the machine base longitudinal direction similarly to the switch duct 23. The second aggregation board 70 has a wireless communication function, is connected to the master control device 40 via the third wireless network Mn3, performs wireless communication with the master control device 40, and controls each tension sensor 25. An analog signal (detection value) is input from the (second input / output device).

According to the above-described wiring structure, the signal lines S2 and S3 from each of the first input / output devices 20 to 22 and each of the tension sensors 25 (second input / output devices) are connected to the first integrated board 60.
And a short length up to the second aggregation board 70, and
Since the connection lines between the aggregation boards 60 and 70 and the master control device 40 can be omitted, the wiring can be greatly reduced. In addition, by housing the aggregation boards 60 and 70 and the signal lines S2 and S3 in the switch duct 23 and the sensor duct 26, the ducts 23 and 2
6 can function as a wiring base, and the signal lines S2 and S3 can be easily wired to the aggregation boards 60 and 70, so that the efficiency of the wiring operation can be improved.

Further, if such a wiring duct and a consolidating board are prepared, the desired first
Since it is possible to easily add a second input / output unit such as an input / output unit and a yarn state detection sensor, the first input / output unit and the second input / output unit of the yarn state detection sensor depend on the specifications of the drawing false twisting machine 1. Even if the number or type is changed, it can be easily coped with, and the expandability can be greatly improved. For example, in the case of the specification in which the twisting side tension on the upstream side of the false twisting device 5 is detected in addition to the detection of the untwisting side tension by each tension sensor 25 (second input / output device) in the present embodiment, Wiring duct at a desired location nearby (the sensor duct 26 can be shared)
If each signal line from each tension sensor and the aggregation board are accommodated in this duct, and each signal line and the wireless network are connected to this aggregation board, it is relatively easy,
In addition, it is possible to add a twist-side tension detection function with a small number of wires.

An analog signal is transmitted to each signal line S3 from each tension sensor 25 (second input / output device) to the second aggregation board 70, but these signal lines S3 are connected to the central signal line as in the prior art. Since it is much shorter than that directly connected to the control device, the influence of noise can be minimized. In the present embodiment, the aggregation board 6
0 and 70 and the respective signal lines S2 and S3 are located around the work space W. These are provided in ducts 23 and 26 provided at positions that do not hinder the work activities of the worker. Is housed.

Next, a description will be given of the configuration of each unit connected by the above-mentioned wired structure of the wired and wireless mixed system.
In FIG. 3, a master control device 40 controls each motor control device 30 based on an instruction from a host computer 50, and includes a communication microcomputer (microcomputer).
41, target calculation microcomputer 42, quality evaluation microcomputer 4
3, communication interfaces (I / F) 44, 45, 46,
Multiplexer (MPX) 47 and wireless master 4M
m and the like.

The microcomputer 41 performs communication processing of each data with the host computer 50, is connected to the host computer 50 via the serial communication line La via the communication I / F 44, and the first aggregation board 60
In the first wireless network Mn1, the second aggregation board 7
0 is connected to the third wireless network Mn3. The microcomputer 42 calculates the target rotation speed (rotation speed) of each drive motor based on the detection value of each tension sensor 25 (second input / output device), and communicates with the communication I / F 45 and the MPX.
(Multiplexer) 47 is connected to each motor control device 30 by a second wireless network Mn2.
The microcomputer 43 generates a tension display waveform and / or grades based on the detection value of each tension sensor 25 (second input / output device), and connects to the host computer 50 via the communication line Lc via the communication I / F 46. Have been. The tension waveform data and / or grade evaluation data can be transmitted to the host computer 50 via the communication line Lc, and can be displayed on the display device 51 of the host computer 50.

Each motor control device 30 is provided with each drive motor 1
0 is an inverter module that controls
1, a communication I / F 32, an inverter circuit 33, a wireless slave 3Ms, and the like. The microcomputer 31 performs control processing and communication processing, and is connected to the master control device 40 via the communication I / F 32 and the second wireless network Mn2 via the wireless slave 3Ms. The microcomputer 31 controls the inverter circuit 33 to control the rotation of the drive motor 2 based on the target number of rotations received from the higher-level master controller 40 via the second wireless network Mn2, and controls the rotation of the rotation motor (not shown). The rotation speed of the drive motor 10 is monitored based on the detection data of (3). In the present embodiment, one motor control device 30 individually controls each of the two drive motors 10. However, if each of the drive motors 10 is individually controlled, each motor control device 30 may control each of the drive motors 10 separately.
It may be provided for every four weights.

The first aggregation board 60 includes a microcomputer 61, a communication I / F 62, an input / output I / F 63, and a wireless slave 6Ms.
And so on. The microcomputer 61 performs communication processing by using ON / OFF signals of the input / output devices 20 to 22 as I / O data. The master control device is controlled by the first wireless network Mn1 via the communication I / F 62 and the wireless slave 6Ms. 40.

The second aggregation board 70 includes a microcomputer 71, a communication I / F 72, an A / D converter 73 (can be built in the microcomputer 71), an MPX (multiplexer) 74, and a wireless slave 7
Ms and the like. The microcomputer 71 performs communication processing using an analog signal of each tension sensor 25 (second input / output device) as tension detection data, and performs master control by the third wireless network Mn3 via the communication I / F 72 and the wireless slave 7Ms. It is connected to the device 40. The configuration of the second aggregation board 70 is A
It is a general-purpose wiring-saving configuration in a system that performs signal processing that requires / D conversion. For example, even when a detector other than a tension sensor such as a thread thickness detector is used, the microcomputer 7
This can be dealt with simply by changing one program.

Incidentally, polling communication is performed between the host computer 50 and each master control device 40 via serial communication lines La and Lc, and the master control device 40 and the second
Wireless communication is performed between the aggregation board 60 and the second aggregation board 70 and between the master controller 40 and each of the motor controllers 30 via the wireless networks Mn1, Mn3, and Mn2 to transmit and receive various data. ing.

For example, the master control unit 40 polls each of the subordinate motor control units 30 and each of the aggregation boards 60 and 70 at predetermined intervals, and each motor control unit 3
0, When each of the aggregation boards 60 and 70 receives the normal polling message, it returns a polling response message including various data to the master controller 40.
Also, each motor control device 30, each consolidation board 60 and 70
When an abnormality occurs, the wireless network Mn1, Mn
3, transmitted to the master controller 40 via Mn2. The serial communication line La is, for example, a multi-core cable composed of two transmission lines, two reception lines, and two power supply lines.

In the above configuration, the master control device 40
Captures I / O data from the first aggregation board 60 and tension detection data from the second aggregation board 70 under the control of the microcomputer 41, and
And 43 are transmitted and received. Microcomputer 4
2 calculates the target rotation speed based on the received tension detection data of each weight, and sequentially transmits the target rotation speed to each motor control device 30 via the wireless network Mn2. Then, each motor control device 30 controls each drive motor 10
Is controlled to reach the target rotation speed. Also, the microcomputer 43
Performs tension waveform generation and grade evaluation based on the received tension detection data of each weight, and transmits the waveform data and the grade data to the host computer 50 for display on the display device 51 via the communication line Lc. Then, the display device 51 displays the waveform and the grade.

The microcomputer 42 needs to frequently receive tension detection data of each weight from the microcomputer 41 in order to calculate a target value and the microcomputer 43 to perform quality evaluation. Therefore, the communication line Da is a parallel communication line, and tension detection data for each weight including the weight identification signal is simultaneously transmitted to both the microcomputers 42 and 43 at high speed. On the other hand, I / O data that does not require high-speed transmission as the tension detection data is transmitted by serial communication via the communication lines Db and Dc to reduce the load. Conventionally, the quality evaluation is performed by a device different from the motor control, and the tension detection data is branched into two systems. Therefore, the microcomputer 43 for quality evaluation is connected to the master control device 40 as in the present embodiment.
When it is built in, the simultaneous use of tension detection data is facilitated, and the configuration can be simplified.
Efficient processing of tension detection data can be performed.

For reference, FIG. 4 shows an example of an operation flow of a master-side device having a wireless master 4Mm such as the master controller 40, and a wireless slave 6M such as the second aggregation board 70.
FIG. 5 shows an example of an operation flow of the slave-side device provided with s. In the master control device 40 of FIG. 4, the flow starts when the power is turned on (S1). All the I / O data (I / O state) held in the storage unit is reset (S2). From the second aggregation board 70 to the tension sensor 2
An interrupt relating to the reception of a signal indicating that the switch for calibration (initial adjustment) 5 has been turned on is performed (S3). When the calibration switch is ON (S
3, YES), the calibration values are read from the second aggregation board 70 (S4). When the calibration switch is OFF (S3, NO), the tension value is read from the second aggregation board 70 (S5). The degree of uniformity (CV%) is calculated based on the read tension value (S
6). If there is a transmission command from the photo computer 50 (S7, YES), the stored tension value and / or uniformity is transmitted to the photo computer 50 (S7).
8). If the transmission in S8 is completed or there is no transmission command from the host computer 50 (S7, NO), the flow returns to S3 relating to the interruption and repeats the flow. In the second aggregation board 70 of FIG. 5, the flow starts when the power is turned on (S11). All the I / O data (I / O state) held in the storage unit is reset (S12).
An interrupt relating to the presence or absence of a communication command from a higher-level master is performed (S13). If there is a communication command (S13, YE
S), the state of the display lamp 21 is set to the initial state (S14). The state of the second aggregation board 70 to which the input / output device such as the switch 20 is connected is transmitted to the master controller 40 (S15). The tension value from the tension sensor 25 is transmitted to the master controller 40 (S16). S
If there is no communication command in S13 (S13, NO), S
Returning to step 13, the flow is repeated.

Although the embodiment in which the present invention is applied to the control system of the draw false twisting machine has been described above, the present invention relates to a plurality of first input / output devices and / or a plurality of first input / output units for each weight regardless of whether a single weight is driven. The present invention is applicable to a control system in various textile machines provided with a second input / output device such as a yarn state detection sensor.

[Another Embodiment] The signal line S3 for the tension sensor 25 (second input / output device) may be replaced by a wireless type. In this case, as shown in FIG. 6, the tension sensor 25 includes a detection head 25s that generates an analog signal corresponding to the tension, and an analog / digital converter 29 that converts the analog signal into a digital signal. You. Then, a wireless slave 25Ms provided for each tension sensor 25, a wireless master 7Mm provided on the data aggregation board 70, and a fourth wireless network Mn4 of the wireless slave 25Ms and the wireless master 7Mm are provided.

The second aggregation board 70 includes a communication module 75 for transmission / reception to / from the master controller 40, a microcomputer 76, and a communication module 77 for transmission / reception to / from the tension sensor 25. I have. The tension sensor 25 includes a module 27 for transmission and reception to and from the second aggregation board 70, a microcomputer 28, a switch (for calibration) 34, and a display lamp 35.

With this configuration, the number of signal-related wirings for the master controller 40 for each span can be further reduced, the wiring structure can be further simplified, and the tension sensor 25 can be positioned at any position. Can be easily installed. Thereby, the sensor duct 26 can be omitted. A7 and a25 are transmission / reception antennas.

In the example shown in FIG. 6, the second aggregation board 70 and the higher-level master controller 40 are connected not via the third wireless network Mn3 but via a wired communication line (such as a serial communication line). And the mast control device 40 and the host computer 50 may be connected by wire. Further, the communication line between the doffing lamp, the cutter 14, or another input / output device such as a solenoid valve and the first aggregation board 60 therefor may be formed as a wireless network.

[0042]

As described above, according to the textile machine control system of the first aspect, since the communication between the control device and the consolidation board is made wireless, necessary wiring is condensed from each input / output unit. Since the length is short to the board, it is possible to greatly reduce wiring. In addition, the change to the number of communication data, new installation, and the like can be easily performed by the wireless communication, the expandability and the degree of freedom can be improved, and the function can be enhanced.

According to the control system of the textile machine of the second aspect, since the communication between the input / output device and the aggregation board for the input / output device is made wireless, the communication line connecting the aggregation board and the control device is established. It is only necessary to provide them, and clear wiring saving can be achieved. In addition, the change to the number of communication data, new installation, and the like can be easily performed by the wireless communication, the expandability and the degree of freedom can be improved, and the function can be enhanced.

According to the control system for a textile machine according to the third aspect, the yarn state monitoring sensor signal is converted into a digital signal and transmitted to a higher-level aggregation board via a wireless slave. Claim 2 can be taken in real time by a higher-order aggregation board
There is an advantage that the above-mentioned effect of the configuration can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the structure of a drawing false twisting machine.

FIG. 2 is a perspective view of a main part showing a control system including a wireless network.

FIG. 3 is a configuration diagram of a control system including a wireless network.

FIG. 4 is an operation flowchart of a wireless master-side device;

FIG. 5 is an operation flowchart of the wireless slave side device.

FIG. 6 is a configuration diagram showing a main part of another control system.

[Explanation of symbols]

 20, 21, 22 First input / output device 25 Tension sensor (second input / output device) 25a Detection head 29 Analog / digital converter 40 Control device 50 Host computer 60 First aggregation board 70 Second aggregation board 4Mm, 7Mm Wireless master 6Ms, 25Ms wireless slave Mn1, Mn4 wireless network La communication line

Claims (3)

[Claims] 1. An aggregation board provided for each group of a predetermined number of weights, for gathering data relating to input / output devices provided for each weight, a control device which is a higher rank of the aggregation board, and the aggregation board And a wireless master provided in the control device, and a wireless network of the wireless slave and the wireless master. 2. An input / output device provided for each weight, an aggregation board provided for each group of a predetermined number of weights, and for collecting data relating to the input / output devices in the group; And a wireless master provided on the aggregation board, and a wireless network of the wireless slave and the wireless master. 3. The yarn state monitoring sensor, comprising: a detection head for generating an analog signal corresponding to a yarn state; and an analog / digital converter for converting the analog signal into a digital signal. 3. The control system for a textile machine according to claim 2, wherein a digital signal indicating a yarn state is transmitted to a higher-level aggregation board via the wireless slave.