JPH0726289B2 - Loom control method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a loom, and more particularly, to a method for controlling a loom that determines weaving conditions for the loom based on information about threads wound on a thread carrier.

2. Description of the Related Art With the automation of a loom, when weaving specifications such as thread type, thread thickness, thread density, total number of warp threads, and weaving width are input using a keyboard, the host computer calculates the number of revolutions of the loom,
A method for automatically determining weaving conditions such as warp tension, on / off timing of weft insertion nozzle, fluid pressure, etc., and transmitting data to the control device while designating the number of the loom was developed, and by the patent applicant, It has already been proposed as Japanese Patent Application No. 60-73510 "Centralized control method for loom and its apparatus".

Further, the patent applicant similarly developed a method of transmitting not only the weaving conditions but also the yarn information in the past preparation process to the loom, and Japanese Patent Application No. 60-73507 “Centralized control method for loom”.
As proposed.

By using these control methods, the operator of the loom does not need to reset the weaving conditions when changing the weaving specifications and the yarn carrier such as the warp beam and the weft cone, and many of the operators' demands have been made. Labor and time or considerable skill can be saved. Therefore, it has become possible to supply the target woven fabric to the market quickly even in response to the demand for high-mix low-volume production due to the diversification of the market in recent years.

Problems of Prior Art In any of the above control methods, the weaving conditions of the loom are set according to the data input by the keyboard, so that the data input by the keyboard and the thread loaded on the loom are accurate. As long as it corresponds to, it operates normally and the desired effect is obtained.

However, if the data input to the host computer does not correspond to the threads loaded on the loom due to an operator's mounting error, etc., weaving is continued based on inappropriate weaving conditions, resulting in defective products. The problem of being produced arises. As a method for avoiding this, Japanese Patent Application No. 60-68496
There is the issue of "Loom centralized control method". However, since the above-mentioned inconvenience is fundamentally caused by the fact that the flow of goods and the flow of information in the factory are separate, the situation still tends to occur.

OBJECT OF THE INVENTION It is an object of the present invention to prevent the occurrence of such an inconvenience, and at the same time, to provide a yarn which is actually provided by constantly integrating the yarn, that is, the flow of material and the flow of information after the preparation step. A weaving machine control method capable of automatically setting the optimal weaving condition for a loom.

Therefore, in the first method of the present invention, at the end stage of the preparation process, predetermined information such as weaving specifications is stored in advance in a memory provided in a yarn carrier such as a warp beam or a weft cone, When the yarn carrier is mounted on the loom, the predetermined information is read from the memory and the weaving condition of the loom is set based on this information.

The second method of the present invention is to store the history information of the yarn of the yarn carrier in addition to the weaving specifications in the memory provided in the yarn carrier, and after the yarn carrier is mounted on the loom, the memory is stored. The history information is read out from the machine, and the weaving condition of the loom is temporarily changed based on the information, and the weaving is performed.

Here, the memory is composed of a semiconductor memory, a magnetic sheet, a mark sheet, a perforated tape, or another storage medium.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration block diagram of an apparatus for implementing the method of the present invention.

In the figure, a suitable memory 3 is embedded in, for example, a flange portion of the warp beam 2 mounted on the loom 1,
The data stored in the memory 3 is read by the reader 4 in a non-contact manner. Similarly, an appropriate memory 6 is also mounted on the bobbin portion of the weft cone 5 mounted on the loom 1 and is read by the reader 7 in a non-contact manner. These readers 4 and 7 supply the data read from the memories 3 and 6 to the I / O port 9 in the loom control device 8. Data supplied from a sensor 10 provided in the loom 1 is also input to the I / O port 9.

Then, the loom control device 8 receives the I / O data via the data bus 11.
MPU (microprocessor unit) 12, ROM (read only memory) 13, and RAM connected to port 9
(Random access memory) 14 is provided, and these are configured to execute the method of the present invention based on a predetermined program. Further, the I / O port 9 is connected to the actuator 15 of the loom 1 and supplied with a control signal.

A link device 16 is further connected to the data bus 11, and the link device 16 functions as an input / output interface for performing data communication with the host computer 17. The host computer 17 includes a database in which basic data and similar data of weaving conditions obtained in advance from past results are stored, and the weaving conditions are set based on the fabric specification data supplied from the loom control device 8. Seeking,
Data corresponding to the condition is transmitted to the loom control device 8.

Hereinafter, each step in the method of the present invention will be described.

First, at the end stage of the preparation process, the manager stores appropriate fabric specification data in the memories 3 and 6 embedded in the yarn carrier, that is, the warp beam 2 or the weft yarn cone 5, by appropriate writing means. Here, the fabric specification data includes data such as the type of warp, the thickness of warp, the total number of warp, the type of weft, the weft driving density, the thickness of weft, and the width of weaving.

Subsequently, the warp beam 2 and the weft cone 5 are mounted on the loom 1. Therefore, the readers 4 and 7 read the fabric specification data from the memories 3 and 6 in a non-contact manner, and the read fabric specification data is transferred to the host computer via the I / O port 9, the data bus 11 and the link device 16. Transmitted to 17. This transmission operation is performed by the MPU 12 based on the transmission program stored in the ROM 13.

Then, the host computer 17 calculates a standard setting value based on the transmitted fabric specification data.

FIG. 2 shows a flowchart of the standard setting value calculation performed by the host computer 17, and FIG. 3 shows functional blocks corresponding to this flowchart.

2A and 3A are a flowchart and a functional block for calculating a standard warp total tension set value T. As shown in FIG. First, the basic data a indicating the tension / denier of the same yarn type is read from the database. Next, of the fabric specifications supplied from the memories 3 and 6, the total number N of warp yarns,
Using the warp yarn denier number d, the calculation T = a · d · N / 1000 is performed to calculate the total warp tension setting value T.

Next, FIG. 2 (b) and FIG. 3 (b) are a flowchart and a functional block for calculating the standard pressure (fluid pressure) set value P. Here, as shown in FIG. 4, the past similar data of the same kind as the kind of wefts supplied from the memories 3 and 6 are shown in FIG. 4 as weft thicknesses b ₁ , b ₂ ... And fluid pressures P ₁ , P. ₂₎ is read out, and bi <b <bi for the weft thickness b transmitted from the memories 3 and 6.
+ Calculated ₁ meet bi, bi _{+ 1,} Pi, a Pi _{+ 1,} by using these, from the relationship shown in FIG. _{5, P = (Pi + 1 -Pi} ) ·
The interpolation calculation of (b-bi) / (bi + ₁ -bi) + Pi is performed,
The standard pressure set value P is calculated.

2 (c) and 3 (c) are a flowchart and a functional block for calculating the rotational speed setting value R, and FIGS. 2 (d) and 3 (d) show that the nords are on. 9 is a flowchart and a functional block for calculating an off-timing set value t. In the same manner, the similar data read from the database is also used to perform interpolation calculation to calculate each set value.

Various standard setting values calculated in this way are all
The operation signals are sequentially transmitted to the loom control device 8 via the link device 16.

Next, FIG. 6 is a flowchart showing the sequence of the series of weaving condition calculation processes up to now as steps 1 to 8,
In this drawing, the step numbers are written together with parentheses.

In Step 2 after Step 1 of inputting the fabric specification,
There is a judgment process for judging whether or not there is the same specification in the past, and if there is the same specification, step 8
Then, the data of the same specification is read from the database. At this time, step 3 for calculating each standard setting value
Step 7 is skipped because it is unnecessary. By the operation according to such a flowchart, the loom 1 receives the operation signal, and then performs weaving based on the standard set value so as to correspond to the new fabric specification.

Further, the memories 3 and 6 also store the history information of the yarn obtained in the preparation process. That is, defect information indicating how many meters of the yarn wound around the yarn carrier has a defect is stored in the memories 3 and 6 as history information.

Therefore, the history information is read by the readers 4 and 7 in the MPU 12. Therefore, the weaving machine control device 8 prevents weaving and wefting of the loom in advance by performing weaving while temporarily changing the weaving conditions during weaving.

FIG. 7 shows a flow chart of the calculation for changing the weaving condition performed by the MPU 12 based on the history information of the warp yarns, and FIG. 8 shows a flow chart of the calculation for changing the weaving condition performed by the MPU 12 based on the history information of the weft yarns. .

In FIG. 7, in the process of warp control, step 1,
In the course of a few steps, the condition determination as to whether or not the failure flag is set, the condition determination as to whether or not the failure position is approached, and the failure flag setting are performed sequentially. If NO in step 1 and YES in step 2,
Assuming that the defective position is approaching, the defective flag = 1 is operated in step 3. When the defectiveness flag is set in this way, YES is obtained in the subsequent step 1, and in the subsequent step 4, it is determined whether or not the defectiveness position has passed. When the warp defect position has passed, in the next step 5, the warp defect flag = 0 is operated to advance to the next program. If NO in step 4, step 6
If it is YES, the process proceeds to the next step 8, but if NO, the operation of [tension = regular tension-fine correction tension (ΔT)] is performed in step 7. Done. Further, in the subsequent step 8, it is judged whether or not the rotational speed is the lower limit, and if YES, the process proceeds to the next program, but if NO, then in the next step 9, [rotational speed = normal rotational speed−minute Correction rotation speed (ΔN)] is performed. In this way, when the defective position of the warp approaches, the warp tension is gradually lowered to a low value, and at the same time, the rotation speed of the loom is gradually lowered to a low value. Therefore, by the time the warp failure position comes, the loom sets the tension of the warp yarn to the lower limit value and the rotation speed is also set to the lower limit value, and weaving proceeds so that unnecessary warp stops do not occur. .

On the other hand, if NO in step 2, it is determined in the following step 10 whether or not the tension is set to a normal value. If YES, the process proceeds to the next step 12, but if NO, step 11 [Tension = current tension + corrected tension (ΔT)] is operated, and in the following step 12, it is determined whether the rotation speed is normal or not. If YES, the process proceeds to the next control, but NO If there is, the operation of [rotation speed = current rotation speed + correction rotation speed (ΔN)] is performed in step 13. In this way, if the loom passes through the warp failure position, the loom will continue to weave while returning to the normal tension again and returning to the normal rotation speed. As described above, in the control of the warp, the tension of the warp and the rotation speed of the loom are adjustment contents.

Next, in the weft control shown in FIG. 8, the pressure of the weft insertion nozzle is adjusted in the same manner as in the warp control by substantially the same steps as in the warp control. However, in step 6 of this weft control, it is judged whether the pressure is the limit, and YES
If it is NO at that stage, it is judged in the next steps 7 and 9 whether the weft yarn in the defective portion is thick or thin, and in steps 8 and 10, weft insertion is performed accordingly. The correction pressure (ΔP) is added / subtracted to / from the operating nord pressure. As described above, in the warp control, the pressure is adjusted according to the defective portion of the weft as long as the pressure is not at the limit, and the weft insertion speed is set to an appropriate value.

Note that FIG. 9 shows an example of the non-contact type memories 3 and 6 used in the present invention.

When the first coil 21 receives a command from the external head (not shown) as a change in magnetic force lines, the first coil 21 is amplified and shaped by the waveform shaping circuit 23 and then input to the control circuit 24. The control circuit 24 starts transmitting or receiving data according to the command.

In the case of reception, a response is returned from the second coil 22 as a change in the magnetic force line through the drive circuit 25, and then the transmitted data is sequentially stored in the semiconductor memory 26.

On the contrary, in the case of transmission, the data is read from the semiconductor memory 26, and the second coil 22 similarly transmits the data.

The built-in battery 27 supplies electric power to each circuit,
It is also used to back up the contents of the semiconductor memory 26.

These are various known techniques such as common use of the first coil 21 and the second coil 22, a sensor other than the coil, a non-volatile memory, modulation of data / command / response by high frequency, and rectification of high frequency to obtain a voltage. It can be put into practical use while being deformed.

Modification of the Invention In the above embodiment, the loom control device 8 is the link device 16
Connected to the host computer 17 via
It is not limited to this.

For example, the MPU 12 can calculate the standard value setting. In this case, only the database on the host computer
It can also be configured to receive from 17. Further, if the capacities of the memories 3 and 6 are large, it is possible to calculate the weaving condition itself in the preparation process and store the data corresponding to the result in the memories 3 and 6.

In the above embodiment, the reading of information from the memories 3 and 6 is performed in a non-contact manner, but it may be performed in a contact state. At this time, non-contact is preferable because abrasion and damage at the time of contact may be a problem.

EFFECTS OF THE INVENTION According to the present invention, since information such as fabric specifications and the like moves integrally with the yarn carrier, the flow of goods and the flow of information can be unified, and an inappropriate weaving condition due to an operator's mounting mistake, etc. Weaving will not be performed based on this.

In addition, the weaving conditions are set according to the warp threads mounted on the loom and the loom is operated, so that the production plan in the fabric factory can be flexibly changed.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an apparatus that implements the method of the present invention. FIG. 2 is a flowchart for calculating each standard setting value.
FIG. 6 is a functional block diagram corresponding to the flowchart of FIG. 2, FIG. 4 is a diagram showing similar data read from past accumulated data, and FIG. 5 is a diagram for explaining interpolation calculation, and FIG. Is a flowchart showing the entire operation, FIG. 7 is a flowchart showing an example of the warp control operation, and FIG.
FIG. 9 is a flowchart showing an example of weft control operation, and FIG. 9 is a block diagram of the memory. 1 ... Loom, 2 ... Warp beam, 3 ... Memory, 4 ...
Leader, 5 ... Weft cone, 6 ... Memory, 7 ... Reader, 8 ... Loom control device, 12 ... MPU, 16 ... Link device, 17 ... Host computer.

Claims (8)

[Claims] 1. A process of obtaining predetermined information about a yarn wound on a yarn carrier, a process of storing the predetermined information in a memory provided in the yarn carrier, and a yarn loom equipped with the yarn carrier. A method of controlling a loom, comprising: a step of reading the predetermined information from the memory; and a step of setting a weaving condition of the loom based on the predetermined information read from the memory. 2. The predetermined information includes at least one of thread type information, thread thickness information, thread density information, weaving width information, and history information.
A method for controlling a loom according to item. 3. The weaving machine control method according to claim 1, wherein the yarn carrier is a warp beam, and the predetermined information includes total warp number information. 4. The method for controlling a loom according to claim 1, wherein the memory is embedded in the yarn carrier, and the reading of information from the memory is performed in a non-contact manner. . 5. The weaving condition includes at least one of the number of rotations of the loom, the warp tension, the on / off timing of the weft insertion nozzle, and the fluid pressure. Loom control method. 6. The weaving machine control method according to claim 5, wherein the weaving condition is determined according to the predetermined information and data stored in a host computer. 7. A process of obtaining history information about a yarn wound on a yarn carrier in a preparation step, a process of storing the history information in a memory provided in the yarn carrier, and a process of mounting the yarn carrier on a loom. The weaving machine, wherein the weaving conditions of the weaving machine are temporarily changed based on the history information read from the memory, and the weaving conditions are temporarily changed. Control method. 8. The history information includes defect information indicating a position of a defective portion of the yarn, and the weaving condition is the number of rotations of the loom,
8. The weaving machine control method according to claim 7, further comprising at least one of warp tension, weft insertion nozzle on / off timing, and fluid pressure.