JP3208214B2 - Conveyance control device for yarn supply in weaving factory - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to
When supplying a weft yarn supply to each loom, even when each loom weaves a multicolor woven fabric, a supply at a weaving factory can supply a predetermined yarn supply accurately. The present invention relates to a yarn body transfer control device.

[0002]

2. Description of the Related Art In a weaving factory having a large number of looms, there has been proposed a yarn feeder transport system for accurately supplying a yarn feeder for a predetermined weft to each loom (for example, Japanese Patent Laid-Open Publication No. H11-163873). JP-A-4-289244).

[0003] This is composed of a main road passing through a standby station of a center, a plurality of branch roads corresponding to each row of a loom in a weaving factory, and a loop-shaped communication path for communicating with each branch road. The carrier for conveyance is circulated on the traveling path. The center mounts various kinds of yarn feeders used in each loom on a carrier and starts the carrier. The carrier loaded with the yarn feeders stands by while circulating and running on a communication path. On the other hand, in the communication path, at an arbitrary point on the way, a carrier on which a type of yarn feeder required by the loom is mounted is selected, and the carrier enters a predetermined branch path. Then, each loom can receive the requested type of yarn feeder by unloading a predetermined yarn feeder from the carrier traveling on the branch path.

[0004]

According to the prior art, the carrier is selected only at one point in the middle of the communication path, so that the distance between the carriers on the communication path cannot be shortened. However, there is a problem that the required length of the yarn feeder becomes unduly long or the supply timing of the yarn feeder to the loom is delayed.

[0005] That is, when a carrier is selected at an arbitrary point on the communication path, the branch path corresponding to the carrier must be in a state where the carrier can enter until the carrier enters. If it is short, immediately after one carrier is selected, a subsequent carrier to enter another branch may be selected. In this case, if the branch path to which the subsequent carrier enters is upstream of the branch path to which the preceding carrier enters, the preceding carrier may erroneously enter another branch path. To prevent such intrusion,
It is necessary to make the running distance of the carrier sufficiently large, specifically, to be larger than the distance from the selected position of the carrier to the second farthest branch road.

In view of the above-mentioned problems of the prior art, an object of the present invention is to select a carrier at a plurality of points in the middle of a communication path for branching each branch path, thereby unnecessarily increasing the required length of the communication path. It is an object of the present invention to provide a yarn feeder conveyance control device in a woven fabric factory, which can eliminate the problem that the supply time of the yarn feeder is delayed.

[0007]

According to the present invention, there is provided a vehicle comprising: a main trunk passing through a standby station of a center; a plurality of branch roads provided for each row of the loom;
It is provided with a communication path connected to the main road and arranging a branch controller for each branch road, and a discriminating means installed for each branch controller and having a detector and a comparator. On the road, a carrier for transporting the yarn feeder is run for each loom, and when there is a request signal from each loom, the discriminating means passes through a detector and a comparator, and supplies a supply of a type suitable for the request signal. The gist of the present invention is to determine the carrier that is transporting the thread body, drive the corresponding branch controller, and allow the carrier to enter the branch path where the loom that generated the request signal is installed.

The discriminating means can discriminate the identification code of each carrier.

[0009]

According to the structure of the invention, the carrier on which the yarn feeder is mounted at the standby station at the center is
Thereafter, in the communication path, the type of the installed yarn feeder is determined by the determination means. That is, the determination means
By determining the carrier that is transporting the type of yarn supply required by each loom and controlling the drive of the branch controller, the carrier enters the branch path where the loom that generated the request signal is installed. When the carrier that has entered the branch path reaches the loom requesting the yarn feeder, the carrier unloads the loaded yarn feeder. Further, the discriminating means is provided for each branch controller, and can minimize the traveling interval of the carrier in the communication path and minimize the required length of the communication path.

When each carrier has an identification code, the identification means can identify the identification code of each carrier, and can easily determine the type of the yarn feeder mounted on the carrier. The identification code at this time may be fixed in advance for each carrier, or may be set for each type of yarn feeder when the yarn feeder is mounted at the center. In the former case, in the center, a specific type of yarn supplying body may be mounted on the carrier having the specific identification code in accordance with the identification code of the carrier.

[0011]

Embodiments will be described below with reference to the drawings.

A yarn feeder conveyance control device in a weaving factory includes a main trunk Rm passing through a standby station DS at a center.
, A loop-shaped communication path Rc, and a loom Lij (i = 1, 2,
, J = 1, 2,...), The branch paths Rj (j =
1, 2,...), The main road Rm, the connecting road Rc, and the branch road Rj.
Carrier Dk (k
= 1, 2,...) (FIG. 1). However, FIG.
Shows the case where i = 3 and j = 4.

The looms Lij are arranged in rows i and j. Each loom Lij is set with a multicolor fabric of any specification. Therefore, each loom Lij has a plurality of weft insertion devices, and each of the weft insertion devices operates in a predetermined order according to the specification of the multicolor fabric to be set, and inserts different wefts. Each loom Lij is provided with a request signal generating means Aij (i = 1, 2,..., J = 1, 2,
..), Unloading means Cij (i = 1, 2,..., J = 1, 2,...)
Is attached.

The connection Rc is connected to the main road Rm, and each branch Rj is branched from the connection Rc. Also,
A plurality of branch controllers RCj (j = 1, 2,...) For branching each branch Rj are arranged in the connection Rc for each branch Rj. Each branch controller RCj is provided with a discriminating means Bj (j = 1, 2,...). Each discriminating means Bj drives the corresponding branch controller RCj to convert the carrier Dk traveling from the upstream side into the downstream branch path Rj.
Can be entered.

The request signal generating means Aij of each loom Lij consumes the entire amount of any of the plurality of types of weft yarn feeders mounted on each loom Lij, or a predetermined short time. When it is detected that the entire amount has been consumed, the request signal S is sent to the determination means Bj of the communication path Rc.
ij (i = 1, 2,..., j = 1, 2,...). However, the request signal Sij is input to the corresponding discriminating means Bj for each loom Lij installed along the branch path Rj, and indicates the type of the yarn feeder requested by the loom Lij.

A yarn feeder P can be mounted on each carrier Dk. The carrier Dk is controlled by a carrier control system (not shown), and the main road Rm,
The vehicle circulates in the direction of the arrow in FIG. 1 along the connecting road Rc and the branch road Rj. The center includes a standby station DS for holding the carrier Dk, and a yarn feeder selecting means KS.
And a stock yard for the yarn feeder P (not shown). Therefore, the yarn feeders P are stored in the stock yard for each type, and the yarn feeders P taken out of the stock yard are controlled by the robot device RB in accordance with the mounting command signal Sr from the yarn feeder selecting means KS. Via carrier Dk
Shall be mounted on Note that the robot device RB is installed in the standby station DS.

Each carrier Dk is equipped with code display means Dak (k = 1, 2,...) For displaying the identification code Fk (k = 1, 2,...) Of the carrier Dk. Therefore,
The yarn feeder selecting means KS is provided with a sign indicating means D of the carrier Dk.
By reading the contents of ak, the identification code Fk displayed on the code display means Dak can be read. Further, the yarn supplying body selecting means KS outputs a mounting instruction signal Sr to the robot apparatus RB, and loads the yarn supplying body P of the type corresponding to the identification code Fk on the carrier Dk.

Here, the code display means Dak holds, for example, an identification code Fk in an electronic memory.
A storage communication unit capable of transmitting an identification code Fk to the outside by a remote communication system such as an electromagnetic coupling system, an optical communication system, or a microwave communication system in response to a read signal from the yarn supplying body selecting means KS. . Further, as the identification code Fk displayed on the code display means Dak in this way, an arbitrary code unique to each type of yarn feeder used in the loom Lij can be adopted.

The carrier Dk can be formed, for example, as a carriage 11 running along a main road Rm, a connecting road Rc, and a branch road Rj laid on the ceiling of a building (FIG. 2). At this time, the yarn feeder P can be mounted on the hook 11a hanging from the carriage 11 by suspending the yarn feeder P rearward in the traveling direction of the carrier Dk.

The unloading means C attached to each loom Lij
The ij can be formed, for example, from a pole 21 that expands and contracts up and down, and a hook 21a that protrudes from the tip of the pole 21 (FIG. 1). The pole 21 is erected on the floor via a pedestal 21b with the hook 21a directed rearward in the traveling direction of the carrier Dk immediately below the branch path Rj.

The unloading means Cij extends the pole 21;
By raising the hook 21a to almost the same height as the hook 11a of the carrier Dk, the yarn feeder P on the hook 11a is smoothly transferred onto the hook 21a, and the yarn feeder P is transferred from the traveling carrier Dk. Unloading is possible (dashed line in the figure). The unloading means C that has completed unloading
Since ij stands by after shortening the pole 21 (two-dot chain line in the figure), the weft supply device (not shown) of the loom Lij takes in the yarn feeder P on the unloading means Cij as needed, and feeds the yarn. The yarn of the body P can be used for the weft.

The discriminating means Bj of the communication path Rc can be formed of, for example, a detector 31, a comparator 32, and a setting device 33 (FIG. 3). The detector 31 remotely reads the contents of the code display means Dak on the carrier Dk traveling along the communication path Rc on the upstream side of the branch controller RCj corresponding to the determination means Bj without contact. The identification code Fk of the carrier Dk displayed on Dak can be detected, and its output is input to the comparator 32. A request signal Sij from each loom Lij is input to the setting device 33, and its output is also input to the comparator 32. The output of the comparator 32 is output as a drive signal Sd to the corresponding branch controller RCj,
3 is also branched and input.

The operation of the yarn feeder conveyance control device is as follows.

First, at the center, when the carrier Dk enters the standby station DS, the yarn feeder selecting means KS
Reads the contents of the code display means Dak of the carrier Dk and reads the identification code Fk of the carrier Dk.

Subsequently, the yarn feeder selecting means KS issues a mounting command signal Sr to the robot apparatus RB so that a predetermined type of yarn feeder P corresponding to the read identification code Fk is mounted on the carrier Dk. The robot device RB outputs a predetermined yarn feeder P to the carrier D based on the mounting command signal Sr.
Mount on k. Further, a carrier control system (not shown) starts the carrier Dk on which the yarn feeder P is mounted, and causes the carrier Dk to travel along the travel path R. Carrier Dk is the main road Rm
Through the connection route Rc, and then the branch controller RCj
Circulates along the connecting path Rc unless the driving means is driven by the discriminating means Bj.

On the other hand, in a given loom Lij, when the entire amount of a given yarn feeder in use is consumed, or when the entire amount is consumed in a short time, the request signal generating means Aij of the loom Lij. Is the corresponding discriminating means B of the communication path Rc.
j, a request signal Sij is generated, and the request signal Sij is input to the setter 33 of the corresponding determination means Bj. Therefore, the setting unit 33 at this time decodes the request signal Sij,
After detecting the type of the yarn feeder requested by the loom Lij, the identification code Fk of the carrier Dk corresponding to the type of the yarn feeder is found and held. However, in this case, the correspondence between the type of the yarn feeder and the identification code Fk of the carrier Dk is exactly the same as that used by the yarn feeder selecting means KS.

In the communication path Rc, any carrier Dk
Arrives upstream of any branch controller RCj, the discriminating means Bj attached to the branch controller RCj operates.
That is, the detector 31 of the discriminating means Bj is connected to the carrier Dk.
The identification code Fk displayed on the code display means Dak is read and the result is sent to the comparator 32.
, And it is possible to output a drive signal Sd to the corresponding branch controller RCj by detecting that they match. Here, the setting contents of the setting device 33 and the contents of the code display means Dak are respectively specified by the identification code Fk of the carrier Dk corresponding to the type of the yarn feeder requested by the loom Lij, and the specific type by the yarn feeder selecting means KS. Code F of the carrier Dk carrying the yarn feeder P
k, the fact that they match is that carrier D
k on the loom L via the request signal Sij.
It indicates that ij matches the type of the requested yarn feeder.

Then, the discriminating means Bj determines that the type of the yarn feeder P corresponding to the read identification code Fk is a branch controller RC.
j is determined to be required by the loom Lij installed along the fork Rj immediately downstream of the drive signal Sd
To drive the branch controller RCj, and the carrier Dk
Can enter the fork Rj. When the loom Lij that has requested the type of yarn feeder P corresponding to the read identification code Fk determines that it is not along the branch path Rj, the branch controller RCj is not driven and the carrier Dk is moved further downstream. To the branch controller RCj-1.

The discriminating means Bj outputs the drive signal Sd to the branch controller RCj for a predetermined time, and outputs the carrier Dk.
Is to enter the branch Rj via the branch controller RCj within the duration of the drive signal Sd. However, instead of outputting the drive signal Sd only for a predetermined time, the discriminating means Bj is provided with a detector for the carrier Dk at the entrance side of the branch Rj, and when the entry of the carrier Dk is confirmed by this detector. , The output of the drive signal Sd may be stopped. Further, a detector for the carrier Dk may be provided on the communication path Rc downstream of the branch controller RCj, and the drive signal Sd may be stopped on condition that the carrier Dk is not detected within a predetermined time by the detector.

When the carrier Dk enters the branch path Rj and reaches near the target loom Lij, the unloading means Cij of the loom Lij operates.

First, the unloading means Cij reads the identification code Fk displayed on the code display means Dak of the carrier Dk in a non-contact manner. Then, the type of the yarn feeder corresponding to the read identification code Fk is The loom Lij via the request signal Sij
On condition that it matches the type of yarn supply requested by
Unload the yarn feeder P on the carrier Dk. When this condition is not satisfied, the unloading means Cij
, And wait for it to pass through the carrier Dk.
Here, transmission of necessary information to the unloading means Cij is performed by the request signal generating means Aij inside the loom Lij.

The setting device 33 of the discriminating means Bj is cleared by the drive signal Sd from the comparator 32, and the discriminating means Bj operates until the request signal generating means Aij of the loom Lij generates a new request signal Sij. There is no accidental restart. However, the setting unit 33 simultaneously outputs a plurality of request signals S from a plurality of looms Lij installed along the branch path Rj.
Considering that ij is output, a memory area of, for example, a first-in first-out (FIFO) system can be provided to sequentially process such a plurality of request signals Sij.

In the above description, the request signal generating means Aij of each loom Lij determines the identification code Fk of the corresponding carrier Dk instead of the type of the requested yarn feeder when requesting the yarn feeder. Bj may be transmitted to the unloading means Cij. At this time, the discriminating means Bj and the unloading means Cij
Can operate based solely on a given identification code Fk. That is, the request signal Sij from the request signal generating means Aij only needs to be able to specify the type of the yarn feeder requested by the loom Lij.

Further, the yarn feeder selecting means KS and the discriminating means Bj
The reading of the identification code Fk by the unloading means Cij may be performed by a mechanical communication method in addition to the optical communication method. For example, the carrier Dk displays a bar code indicating the identification code Fk at an appropriate position, and the yarn feeder selecting means KS, the discriminating means Bj, and the unloading means Cij optically read this bar code. At this time, the code display means Dak is a specific position on the carrier Dk for displaying the bar code. In place of the bar code, a magnetic card storing an identification code Fk may be used. At this time, the yarn supply selecting means KS, the discriminating means Bj, and the unloading means Cij use the contents of the magnetic card. You just need to read it. As still another method, the sign display means Dak of the carrier Dk is composed of a plurality of light emitting members, and the yarn supplying body selecting means KS, the discriminating means Bj, and the unloading means Cij detect the operating state of the light emitting member. The identification code Fk of Dk may be detected.

Incidentally, the unloading means Cij reads the identification code Fk of the carrier Dk, and when the type of the yarn feeder corresponding to the read identification code Fk matches the type of the requested yarn supply, the unloading means Cij reads the identification code Fk from the carrier Dk. Although the yarn feeder P is unloaded, the following operation may be performed instead. That is, it is assumed that the loom Lij can detect the extension / contraction state of the pole 21 of the unloading means Cij of another loom Lij installed on the same branch Rj. Then, the loom Lij
Outputs the request signal Sij to the discriminating means Bj when the yarn feeder P becomes necessary, and the pole 21 of the unloading means Cij of the other loom Lij installed on the same branch Rj Is also in the shortened state, the unloading means C
The pole 21 of ij is extended to stand by, and the pole 21 is shortened as soon as the yarn supply P is received from the carrier Dk.
The setting unit 33 at this time is assumed to have a FIFO memory area.

[0036]

Other Embodiments The request signal Sij from each loom Lij can be sent to the yarn feeder selecting means KS instead of the discriminating means Bj (FIG. 4).

The yarn supplying means selecting means KS outputs a code setting signal Sp for setting the identification code Fk to the code displaying means Dak of the carrier Dk, and also determines the connecting path Rc of the communication path Rc, and outputs a signal of the loom Lij. The identification code signal Sp1 is output to the unloading means Cij.

Now, the request signal Sij has the following content:
Assuming that the type of the yarn feeder requested by the loom Lij and the number of the loom Lij that generates the request signal Sij are included, the yarn feeder selecting means KS determines that the robot device R
By outputting a loading command signal Sr to B, a predetermined type of yarn feeder P can be loaded on the carrier Dk according to the request signal Sij. Thereafter, the yarn feeder selecting means KS sends the sign setting signal Sp to the sign display means Dak of the carrier Dk.
Is output to set the identification code Fk corresponding to the type of the yarn feeder P mounted on the carrier Dk, and the carrier Dk is started.

The yarn feeder selecting means KS further sends the same identification code Fk as that set on the carrier Dk to the identification means Bj and the unloading means Cij via the identification code signal Sp1. However, at this time, the yarn feeder selecting means KS determines the unloading means Cij of the loom Lij that has transmitted the request signal Sij and the branch controller RCj to be driven to reach the carrier Dk to the loom Lij. It is assumed that the means Bj is selected and the identification code signal Sp1 is transmitted, and the other identification means Bj and the unloading means Cij do not transmit the identification code signal Sp1. Then, the carrier Dk that has entered the communication path Rc subsequently transmits a request signal Sij via the discriminating means Bj which has received the identification code signal Sp1 from the yarn supplying means selecting means KS, and the corresponding branch controller RCj. After entering the predetermined branch path Rj where the loom Lij is installed, the yarn feeder P can be unloaded on the branch path Rj via the unloading means Cij of the loom Lij.

Note that the request signal S in each of the above embodiments is
ij may be a combination of the number of the loom Lij and the device numbers of a plurality of weft insertion devices of the loom Lij. Generally, a loom Lij for setting a multicolor fabric is a yarn feeder stand,
It has a plurality of weft insertion devices consisting of a weft length measurement storage device and a weft insertion nozzle, and each of the weft insertion devices operates according to a predetermined order according to the specification of the multicolor fabric, from a predetermined type of yarn feeder. Insert the weft. Therefore, the yarn feeder selecting means KS at this time shall store the device number of the weft insertion device and the type of the yarn feeder corresponding thereto for each loom Lij in advance as a database. The thread selecting means KS can specify the type of the requested thread feeder by referring to this database when receiving the request signal Sij.

Further, the request signal Sij may consist of only information on the type of the required yarn feeder, and the information on the loom Lij that has generated the request may not be included in the request signal Sij itself. However, the yarn feeder selecting means KS at this time
Is provided with an independent input port for inputting the request signal Sij for each loom Lij, and upon receiving the request signal Sij, it is assumed that the loom Lij that has generated the request signal Sij can be specified.

The number of the loom Lij included in the request signal Sij is determined by the branch controller RCj via the discriminating means Bj in order to allow the carrier Dk to enter the branch Rj where the loom Lij is installed in the connecting path Rc. It is for driving. Therefore, this number may be the number of the branch Rj in which the loom Lij is installed, instead of the number of the loom Lij itself.

Note that the identification code Fk of each carrier Dk is
A different code is fixedly set in advance for each carrier Dk, and the yarn feeder selecting means KS mounts a specific type of yarn feeder P on the carrier Dk according to a request signal Sij from each loom Lij. Identification code F of carrier Dk
k is detected and the loom Lij that has transmitted the request signal Sij is detected.
May be output to the discriminating means Bj corresponding to. At this time, the discriminating means Bj holds the identification code Fk from the yarn supplying body selecting means KS in the setting device 33.

Further, the loop-shaped communication path Rc may be simply a linear communication path Rc (two-dot chain line in FIG. 1). In this case, the yarn feeder selecting means KS receives the request signal Sij from each loom Lij, mounts the requested type of yarn feeder P on the carrier Dk and starts it, and the carrier Dk is connected to the communication path Rc.
While traveling on a predetermined branch road R selected by the discriminating means Bj corresponding to the loom Lij that transmitted the request signal Sij.
j.

Further, the discriminating means Bj, instead of discriminating the identification code Fk of the carrier Dk and selecting the carrier Dk, directly detects the type of the yarn feeder P mounted on the carrier Dk, thereby obtaining the carrier Dk. May be selected. That is, the discriminating means Bj may discriminate the type of the yarn supplying body P on the carrier Dk and select the carrier Dk based on the discrimination result.

In the above description, the request signal generating means Aij of the loom Lij does not itself transmit the request signal Sij to the corresponding discriminating means Bj or the yarn feeder selecting means KS, but the discriminating means Bj or A configuration may be employed in which the yarn supplying body selecting unit KS inquires the request signal generating unit Aij about the presence or absence of the request signal Sij. That is, at this time, the discriminating means Bj or the yarn supplying body selecting means KS is connected to each loom L
A scan computer for sequentially scanning the output of the ij request signal generating means Aij is built in. Therefore, the request signal generating means Aij only needs to be able to transmit the request signal Sij to the discriminating means Bj or the yarn feeder selecting means KS, and the signal transmission form is arbitrary.

The unloading means Cij may be signal output means for instructing the unloading of the carrier Dk instead of the means for unloading the yarn feeder P from the carrier Dk. The signal output means at this time is provided in the vicinity of the loom Lij and outputs a command signal to the carrier Dk running on the branch road Rj. On the other hand, the carrier Dk stops when a command signal is input from the signal output means, and the corresponding loom L
A predetermined unloading operation is performed on ij.

The request signal generating means Aij of each loom Lij
Sends the request signal Sij, that is, when the entire amount of any yarn feeder set on the loom Lij is consumed, or when the entire amount of yarn supply is consumed within a predetermined short time. For example, a method of detecting that the state has become as follows. That is, a method of detecting the amount of consumption of each yarn feeder by an appropriate sensor and determining whether or not the amount of consumption has reached a set amount, or the amount of consumption of the yarn feeder and the time required for it. It is a method of detecting and predicting the time at which the yarn feeder is completely consumed from those values, and calculating the arrival of the predicted time or the time a predetermined time before the predicted time.
In addition, the consumption of the yarn feeder can be detected by counting the number of picks and weaving time for the yarn feeder, or measuring the actual weight of the yarn feeder by a weight sensor.

[0049]

As described above, according to the present invention, a carrier is transported via a main road, a connecting road, and a branch road, and the carrier is selected at a plurality of points along the connecting road. Since the carrier on the communication path can minimize the traveling interval, there is an excellent effect that the problems relating to the required length of the communication path and the supply delay of the yarn supplying body can be solved very easily. . Also,
The discriminating means having the detector and the comparator discriminates the carrier which is transporting the type of yarn supplying body conforming to the request signal from the loom and drives the corresponding branch controller. Can be electrically connected directly,
The electric cables in the factory are not complicated, and the system construction cost including the cable construction cost can be minimized.

[Brief description of the drawings]

Fig. 1 Conceptual diagram of the overall configuration

FIG. 2 is an explanatory diagram of a main part configuration.

FIG. 3 is a block diagram of a main part.

FIG. 4 is a main part configuration diagram showing another embodiment.

[Explanation of symbols]

 P ... yarn feeder Lij (i = 1, 2, ..., j = 1, 2, ...) loom Sij (i = 1, 2, ..., j = 1, 2, ...) ... request signal Fk (k = 1, 2, ...) ) Identification code DS Standby station Rm Main trunk route Rc Connection route Rj (j = 1, 2,...) Branch route Bj (j = 1, 2,...) Discriminating means RCj (j = 1, 2,...) Branch controller Dk (k = 1, 2,...) Carrier 31 detector 32 comparator

Claims (2)

(57) [Claims] 1. A main road passing through a standby station of a center, a plurality of branch roads provided for each row of the loom, a communication line connected to the main road, and a branch controller arranged for each branch road. The main trunk path, the communication path, and the branch path are provided for each of the branch controllers, and each of the main trunk path, the communication path, and the branch path is caused to run a carrier that conveys a yarn feeder to each loom. When there is a request signal from each loom, the discriminating means discriminates, via the detector and the comparator, a carrier which is transporting a yarn feeder of a type compatible with the request signal, and a corresponding branch controller. A feed control device for driving a yarn feeder in a weaving factory, wherein the carrier is caused to enter a branch path in which the loom that generated the request signal is installed. 2. The yarn feeder conveyance control device according to claim 1, wherein said determination means determines an identification code of each carrier.