JPH0594568A - Method for identifying winding bobbin by using magnetic marker and its detection element - Google Patents

Abstract

PURPOSE:To automate the sorting of winding bobbins and empty bobbins in a production line of a spinning factory by using a magnetic marker and to save manpower. CONSTITUTION:A magnetic marker 14 constituted of arraying plural magnetic thin wires having rectangular magnetic characteristics having respectively different coercive force or a detection element is connected to one end of each bobbin 15 and a bobbin identifier consisting of two exciting coils 18a, 18b connected to an AC power supply to generate AC magnetic fields, a detection coil 20 for extracting a change in the magnetic flux of the marker 14, a compensating coil 21, an amplifier 22, and a magnetic marker identifier 23 is arranged in the vicinity of a bobbin carrier. When the bobbin 15 is passed through the AC magnetic field and a time-sequential pulse voltage string generated on the coil 20 is signal-processed and recognized at its pattern, the sort of the bobbin 15 can be read out without executing manual operation. The detection element having a collar part and a leg part in which the marker 14 is embedded and showing a T shape at its cross section is engaged with the bobbin 15 and stabilized so as not to be damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting the number and type of bobbins in a spinning mill by using a magnetic marker or a detection element having a magnetic fine wire or a ribbon, and a detection element.

[0002]

2. Description of the Related Art At present, a spinning factory uses a roving machine and a spinning machine to wind various kinds of yarns on a bobbin. The process mainly includes two steps. First, a roving machine winds a roving yarn, and then a spinning machine finally winds the yarn. It is necessary to distinguish between the roving bobbin and the spinning bobbin according to the type of wound thread, that is, the wire diameter, color, material, etc. of the wound thread. An identification mark is attached, and a person discriminates the bobbin by these, and the line is managed so that the bobbin corresponding to the line according to the type of yarn flows. In addition, since the bobbin flows through the line even when the bobbin is not wound, it is necessary to identify such a bobbin, which is also done by a person.

Taking the production line of such a spinning factory as an example, the process of winding the yarn on the yarn winding bobbin will be described below.
FIG. 16 is a flow chart of the bobbin bobbin in the production line of the spinning factory. In FIG. 16, the yarn is wound on an empty bobbin according to the type by one of several roving yarn machines 1 surrounded by a chain line, and the roving yarn bobbin wound with the yarn is put in a case,
The case conveyance line 2 conveys the case in the direction of the solid arrow. The transported case is operated by a person in the case conveyor control box 3, and the roving bobbins contained in the case are temporarily stocked in the roving bobbin hopper 4. Here, the case where the roving bobbin is emptied from the case is filled with an empty roving bobbin placed in an empty roving bobbin hopper 11 which will be described later, and is sent to the case stock line 5 to be temporarily stocked. Then, in order to convey the next roving bobbin, it is supplied to the roving machine 1 as needed.

On the other hand, the roving bobbins temporarily stocked in the roving bobbin hopper 4 are sorted by a person for each different type of the wound thread, and a plurality of roving bobbins are conveyed according to the type of thread. It is placed on one of the lines 6 and advances in the direction of the solid arrow. The roving bobbins that have flown through the roving bobbin transport line 6 are
Is supplied to a plurality of spinning machines 7 provided corresponding to the above.
In each spinning machine 7, the yarn is wound from the supplied roving bobbin to the spinning bobbin, and the spinning bobbin is sent to each spinning machine 7 by a plurality of spinning bobbin feeders 8. The spinning bobbin that has been wound up is stored or shipped by flowing through a plurality of spinning bobbin transport lines 9 in the direction of the solid line arrow depending on the type of yarn.

Further, the roving bobbins emptied by each spinning machine 7 pass through a plurality of empty roving bobbin collection lines 10 corresponding to each spinning machine 7 and proceed in the direction of the dotted arrow to obtain an empty roving bobbin. It is sent to the hopper 11 and temporarily stocked here. The stocked empty roving bobbins are filled by the bobbin loader 12 into the empty case that has flowed through the case transfer line 2 described above. The operation of packing the empty roving bobbins in the empty case is performed by a person using the bobbin loader control box 13.

[0006]

The outline of the production line of the spinning factory has been described above. However, a major problem in the spinning process for managing a large number of types of wound bobbins is to deal with the difference in the types of yarn. That is, the bobbin with the color code or the identification mark is used to sort the bobbin bobbin by hand at a necessary position of this line. Although some factories have introduced color mark sensors, etc., they have not yet reached the point where they can be fully identified, and they also require manpower. Therefore, in such a spinning factory, automating the operation of discriminating a large number and many types of bobbin from the production line is an essential issue for improving the production efficiency and reducing the cost of the product.

The present invention has been made in view of the above-mentioned points, and an object thereof is to manage the number of bobbin bobbins and to identify the type of bobbin bobbin without managing manpower in the production line of a large number and many types of bobbin bobbins. An object of the present invention is to provide an identification method using a magnetic marker that can be performed, and a detection element thereof.

[0008]

In order to solve the above-mentioned problems, the method of the present invention is to attach a magnetic marker or a detection element having a magnetic marker to the bobbin, and at the same time the position necessary for identifying the type of the bobbin. A bobbin discriminator including two excitation coils connected to an AC power source to generate an AC magnetic field, other compensation coils, an amplifier, a magnetic marker discriminator, etc. is installed near the bobbin transporting device, and the bobbin detects the AC magnetic field. When passing, the type of bobbin is read by extracting the induced voltage generated from the magnetic marker from the detection coil and processing the signal.

Further, the detection element attached to one end of the hollow bobbin has a disk-shaped collar portion and a leg portion in which a magnetic marker is embedded, and the collar portion is fixed to one end of the bobbin so that a T-shaped cross section is formed as a whole. Is suitable.

[0010]

[Function] As described above, when a magnetic marker or a detection element using a plurality of magnetic fine wires having different coercive force and saturation magnetic flux is attached to the bobbin and passed through the AC magnetic field band, each magnetic fine wire is retained. Since the magnetic forces are different, the phases are shifted in time to cause magnetization reversal, and as a result, the induced voltage output to the detection coil is obtained as a time-series pulse voltage in the form of a pattern representing a specific type. Recognition processing is performed by this pattern, and the type of bobbin can be identified.

By configuring the shape of the detection element as described above, it is possible to make the longitudinal direction of the magnetic marker coincide with the axial direction of the bobbin, and the magnetic marker is located in the hollow portion of the bobbin. It is not easily damaged during operation and always keeps the correct operation.

[0012]

EXAMPLES The present invention will be described below based on examples. FIG. 1 is a schematic view partially showing a main part configuration of an apparatus to which the bobbin identification method of the present invention is applied. The bobbin bobbin 15 having the magnetic marker 14 attached thereto is placed on the carrying line 17 together with the support 16 so that the central axis of the bobbin bobbin 15 is perpendicular to the moving direction of the carrying line 17, that is, the bobbin bobbin 15 is Place it vertically and run it. The material of the transfer line 17 is a non-magnetic material in order to prevent influence on the magnetic field generated by the magnetic marker 14 and the exciting magnetic field, and
If the electric resistance is low, the magnetic flux generated from the magnetic marker 14 is blocked by the eddy current, and the magnetic flux entering the detection 20 becomes weak. Therefore, it is desirable to use a non-metal in the portion where the magnetic flux generated from the magnetic marker 14 passes. The bobbin 15 is a hollow cylinder, and the magnetic marker 14 is attached to the inner surface of one end of the bobbin 15. Here, the bobbin 15 is illustrated as a wound state. The magnetic marker 14 will be described later. Exciting coils 18a and 18b are arranged so that the carrier line 17 is vertically sandwiched, and these are connected to an AC power supply 19. The detection coil 20 and the compensation coil 21 provided inside the excitation coils 18a and 18b so as to sandwich the transport line 17 in the vertical direction are connected to an amplifier 22, and the amplifier 22 further includes a magnetic marker discriminator 23.
It is connected to a bobbin automatic transport controller 24.

In the above apparatus, according to the method of the present invention,
Along with the bobbin bobbin 15, the magnetic marker 14 traveling on the transport line 17 takes out a change in magnetic flux due to the alternating magnetic field generated from the exciting coils 18a and 18b as an induced electromotive voltage generated in the detection coil 20, and takes this out. The bobbin bobbin 15 is identified by removing noise with the magnetic marker identifying device 23 and performing signal processing such as 1 or 0 conversion of the pulse voltage train. The bobbin 15 can be automatically conveyed. For example, in FIG. 1, the bobbin 15 that travels in the arrow direction from right to left on the transport line 17 is
When it reaches the AC magnetic field region, it receives the above-mentioned action and is distributed in each direction branched to the transport line 17 according to the type of the bobbin bobbin 15. Here, the compensation coil 21 is installed in order to cancel the induced electromotive voltage generated in the detection coil 20 due to the magnetic field change of the AC magnetic field itself.

FIG. 2 shows a schematic diagram of the above-described identification system of the bobbin 15 using the magnetic marker 14 applied to the yarn production line of FIG. 16, and the same parts as those of FIG. 16 are denoted by the same reference numerals. Here, the identification devices including the various devices shown in FIG. 1 necessary for the magnetic marker 14 are collectively displayed as the bobbin identification device 25. In FIG. 2, this bobbin identification machine 25a is shown as a roving bobbin hopper 4 and a spinning machine 7,
The bobbin identification machine 25 is installed in the line of the spinning bobbin feeder 8.
b is installed in the spinning bobbin transfer line 9 and the bobbin identification machine 25
By providing c between the empty roving bobbin hopper 11 and the bobbin loader 12, for example, the bobbin 15 (FIG. 1)
Flows from the roving bobbin hopper 4 to the bobbin identifying machine 25a by one line, and the bobbins 15 identified by the identifying machine 25a are rewound on the spinning bobbin on the respective branched lines according to the type of yarn. After being collected and fed again into one line, they are identified by the bobbin identifying machine 25b , sorted by type, and shipped. That is, according to the method of the present invention, a bobbin sorting work line which has hitherto been relied on manually, for example, a plurality of roving bobbin transport lines 6 is carried out.
The spinning bobbin transport line 9 can be automated and simplified, and the case conveyor control box 3
The bobbin loader control box 13 can be omitted.

Next, the magnetic marker 14 will be described.
As the magnetic marker 14 , it is suitable to use an amorphous magnetic thin wire or thin strip having magnetic hysteresis characteristics of each shape, and it is possible to use a plurality of the same as the raw material. It is also effective to use it as a detection element. FIGS. 3A to 3C are partially peeled perspective views showing the detection element. In FIG. 3A, four amorphous magnetic fine wires 27a, 27b, 27c, and 27d having different coercive force H _c and saturation magnetic flux Φ _{S and} having different wire diameters of 30 to 120 μm are used. arrangement, and although a magnetic marker 14a, the magnetic marker 14a, for example, by two plates such as a plastic plate 28, a detecting element 26a that they adhere or embedded. Figure 3 (b)
3 has the same structure as the detection element shown in FIG. 3A, but the coercive force H _c is different from each other and the saturation magnetic flux Φ _S has the same magnitude. Two
9b, 29c, and 29d are used to show the detection element 26b that constitutes the magnetic marker 14b . Detection element of FIG. 3 (c)
As a modification of FIG. 3B, reference numeral 26c is an array in which the number of amorphous magnetic thin wires is changed, and here, three amorphous magnetic thin wires 29a, 29b, 29d are used as magnetic markers 1.
4c is shown, which is equivalent to the one in which the amorphous magnetic thin wire 29c is missing as compared with FIG. 3 (b).

FIG. 4 shows the detection element of FIG.26aUsed for
Magnetic marker14aMagnetic thin wires 27a, 27b, 27
It is each Φ-H characteristic diagram of c and 27d, and the magnetic thin line 27
Coercive force H of a, 27b, 27c, 27d_cof
The size is H_Ca<H_cb<H_cc<H_cdThere is. Figure 5
Is this detector26aWhen passing through an alternating magnetic field,
The induced electromotive voltage generated in the detection coil 20 (Fig. 1) is
It is shown together with the magnetic field waveform, and FIG.
A magnetic field waveform diagram and FIG. 5B are pulse voltage trains. Of FIG.
Each of the magnetic wires 27a, 27b, 27c, 27d
Coercive force H_cCorresponding to the size of
Voltage is generated and its pulse voltage is proportional to dΦ / dt
Therefore, the saturation magnetic flux Φ of each magnetic wire_a, Φ_b, Φ_c, Φ_dTo
It is possible to obtain an output of a size corresponding to that. That is, magnetic
Car14aType of detector element26aThen detect
Set of the number, phase and level of pulse voltage to be applied
Pattern recognition based on matching, magnetic marker14
aCan be identified, in other words, the article can be identified
A magnetic marker14a，14cDetector element with26
a，26cThe identification method using is as follows.
It FIG. 6 shows amorphous magnetic wires 29a, 29b, 29c, 2
It is each (phi) -H characteristic diagram of 9d, and is a magnetic thin wire 29a, 29.
b, 29c, 29d saturation magnetic flux Φ_SAre the same size
Say, coercive force H_cIs H_Ca<H_cb<H _cc<H
_cdI am trying. Saturation magnetic flux Φ_SI haven't changed the size of
Is a magnetic marker14b，14cInduced pulse
Since the mutual difference of pressure is not used for identification, Φ-H characteristic diagram
Saturation flux Φ of_SThe difference in the size of the
It is.

7 (a) to 7 (g) show detection elements 26b ,
The magnetic markers 14b used for 26c , 14c , and the magnetic markers in which 2 to 4 of the amorphous magnetic fine wires 29a, 29b, 29c, 29d of the 14c are combined are generated in the detection coil 20 when these magnetic markers are passed through an alternating magnetic field. The pulse voltage train is shown together with the AC magnetic field waveform,
(A) is an AC magnetic field waveform diagram. (B)-(g) shows each pulse voltage train, (b) is a magnetic marker 14 here.
The cases of b 2 and (e) correspond to the magnetic marker 14c , and FIG.
Also in (a) to (g), the reference numerals of the magnetic thin wires corresponding to the pulse voltage trains are added. In this case, FIG. 7 (a) to (g)
, The same level of time-sequential pulse voltage is generated. As described above, the pulse voltage train [FIG. 7 (b)] based on the magnetic marker 14b serving as the reference can be identified by defining intermittent positions in the array of the amorphous magnetic thin wires and changing the pulse voltage train. Is.

FIG. 8A shows a detecting element 26 having a T-shaped cross section, which has a shape suitable for attachment to the bobbin 15 (FIG. 1).
FIG. 8B is a perspective view showing d, and FIG. 8B is a side view showing a state in which the detecting element 26 d is attached to the bobbin bobbin 15.
As shown in FIG. 8A, the detection element 26d has, for example, a leg portion 3 that is integrally formed perpendicularly to the central portion of a disk-shaped collar portion 30.
1 shows the magnetic marker 14 shown in FIGS.
a to 14c are embedded, and the overall shape is a cross section T
It has a letter shape. To attach the detection element 26d to the bobbin bobbin 15, since the bobbin bobbin 15 is hollow as shown in FIG. 8B, the leg portion 31 in which the magnetic marker is embedded is inserted into the bobbin bobbin 15 and the bobbin bobbin 15 is inserted. The collar portion 30 is fitted to one end of the detection element 26d by using an adhesive or the like.
It is preferable to fix so that the longitudinal direction of the is aligned with the axial direction of the bobbin 15. However, as described above, the detection element 26d
The shape of the detection element 26d is not limited to this as long as it is fixed to one end of the bobbin 15 so that its longitudinal direction coincides with the axial direction of the bobbin 15.
In addition, on the inner surface of one end of the bobbin 15 of FIG.
It goes without saying that the detection elements 26a to 26c or the magnetic markers 14a to 14c shown in (c) to (c) may be stuck and used as they are.

By the way, the wire diameter, color, material, etc. of the yarn being conveyed in the state in which the yarn is wound on the yarn winding bobbin until now.
Although the method according to the invention for identifying the yarn type has been described, this has to be identified on the empty bobbin on the transport line of the spinning mill, even for unwound bobbins. The bobbin on which the thread is wound needs to be placed vertically on the transport line so that the axial direction of the bobbin is perpendicular to the traveling direction of the transport line. The axial direction of is parallel to the traveling direction on the conveyor line,
That is, it may be placed horizontally. The method of identifying an empty bobbin in such a case will be described below. FIG. 9 is a schematic diagram showing a main part of the identification device when the empty bobbin is conveyed in a horizontal state, and the same reference numerals are used for the same parts as in FIG. Even if the empty bobbin is placed horizontally, the basic principle for identification is the same as in the case where it is placed vertically, and the point is that the arrangement of the detection coil and the exciting coil may be changed. In FIG.
An empty bobbin 15a attached with a magnetic marker 14d is on the carrier line 17, and the magnetic field is generated by exciting coils 18c, 18c.
d and the AC power supply 19 are applied in the traveling direction of the transfer line 17. At this time, the carrier line 17 is arranged so as to penetrate through the centers of the opposing annular exciting coils 18c and 18d, but the exciting coils are not two, namely 18c and 18d,
Only one cylindrical solenoid coil may be used.

When the empty bobbin 15a enters into the magnetic field range, the magnetic marker 14 is excited by an alternating current, an alternating magnetic flux is generated and passes through the upper portion of the detecting coil 20, and a pulsed voltage is applied to the detecting coil 20 due to its high speed inversion. Induce sequentially. This voltage is applied to the amplifier 22 and the magnetic marker identifying device 2 shown in FIG.
3, signal processing can be performed through the bobbin automatic transport controller 24 to identify the type of the empty bobbin 15a.
These devices are shown merely as measuring device 32 in FIG. The compensation coil 21 shown in FIG. 1 is omitted in FIG.

In FIG. 10, the empty bobbin 15a is moved to the transport line 1
9 is the same as that of FIG. 9 in that the empty bobbin 15 is laid horizontally, but it is mounted on the transfer line 17 so that the axial direction of the empty bobbin 15a is at right angles to the traveling direction. different. In this case, the identification method is also the same as that in FIG. 10 in principle. In FIG. 10, the magnetic marker 1 is attached to the empty bobbin 15a.
Keep attaching an 4d, the exciting coil 18 used in FIG. 9
The empty bobbin 1 is arranged in the same manner as described with reference to FIG. 9 by disposing the detection coils 20 on both sides of the transport line 17 so that the flat portions of c and 18d face each other.
The type of 5a can be identified. Therefore, FIG.
If the identification method of FIG. 10 and the identification method of FIG. 10 are installed together at different locations, when the empty bobbin 15a is placed horizontally, it is possible to identify whether the central axis is the same as the traveling direction or the direction orthogonal thereto. Is.

However, when the empty bobbin 15a travels, that is, when the direction of the magnetic marker 14d is inclined with respect to the direction of the alternating magnetic field, the identification methods of FIGS. 15a cannot be identified. Therefore, next, a method of distinguishing the empty bobbin 15a from the direction of the alternating magnetic field will be described. FIG. 11 is a schematic diagram showing that the direction of the magnetic marker 14d is inclined by θ with respect to the direction of the alternating magnetic field. At this time, the magnetic field applied to the magnetic marker 14d is expressed by the following equation, and the effective magnetic field becomes small.

H _eff = H _ex cos θ ────────────── (1) However, H _eff : Effective magnetic field applied to the magnetic marker 14d H _ex : The carrier line 1 by the exciting coils 18c and 18d.
7. Magnetic field applied on 7: angle between magnetic marker 14d and H _ex Here, from the magnetic marker 14d , 4 bits, that is, 16
The case of identifying the type will be described. In order to identify 4-bit, a magnetic marker 14d made of a magnetic thin wire having five types of coercive force is used. This magnetic marker 1
4d is, for example, the four amorphous magnetic fine wires 29a, 29b, 29c, and 29 that constitute the magnetic marker 14b described above.
Further, one 29e is added to d and five amorphous magnetic wires are used, and the magnetic hysteresis curves of these magnetic wires are shown in FIG.

Each of these magnetic thin wires is excited by an AC triangular wave having a waveform shown by a solid line in FIG. Magnetic field and magnetic marker 14d
For direction identical, i.e., (1) when θ is 0, the pulse voltage is generated at time t ₁ ~t ₅ in coercive force H ₁ to H ₅ each magnetic thin wire as shown in FIG. 14 , Empty bobbin 15 depending on the preset time zone and the presence or absence of induced voltage
a can be identified. Next, when the angle [θ in the equation (1)] between the direction of the magnetic field and the direction of the magnetic marker 14d becomes, for example, 45 degrees, the effective magnetic field is 0.707 of the applied magnetic field.
Since the magnetic field is doubled, the magnetic field [H _{eff in the} equation (1)] applied to the magnetic marker 14d has the waveform shown by the dotted line in FIG. Therefore, the time when the coercive force becomes H _{1 to} H ₅ changes, and the time when the voltage is induced becomes t ₆ to t _{10 in} FIG. 15, and the time zone is different from that in FIG. Here, since the four types of magnetic thin wires are used to identify the empty bobbin 15a, any one of the five magnetic thin wires, for example, the magnetic thin wire 29a having the smallest coercive force is used as all the magnetic markers. It is built in 14d , the induced voltage is used as a reference signal, and the other four are used as identification signals. The generation time of the normal signal voltage is set to the time shown in FIG. 14, and when it deviates from this time zone, the difference from the normal time is obtained from the signal of the magnetic wire 29a, and the time of other signals is corrected. Thus, the empty bobbin 15a can be identified. Although the alternating-current excitation waveform of this method is described as a triangular wave, it goes without saying that other waveforms such as a sine wave can be used.

The method of identifying the bobbin using the magnetic marker and the outline of the apparatus have been described above. Here, the bobbin is treated as a simple hollow cylinder as a typical one. There is. However, there are various types of bobbins such as tapered ones and ones with a collar, which are called tubes, but the present invention also applies to these shapes in the same manner as described in the embodiments. Can be identified.

[0026]

[Effects of the Invention] In the yarn production line in the spinning factory,
To classify the bobbins wound according to the type of thread or the empty bobbin without winding the thread, the bobbin was colored manually, but according to the method of the present invention, the coercive force is different. It is necessary to attach a magnetic marker in which multiple magnetic fine wires with rectangular magnetic hysteresis characteristics are arranged or a detection element in which this magnetic marker is embedded in a plastic plate to one end of the bobbin, and to identify this bobbin in the bobbin transfer line. The bobbin is placed vertically or horizontally on the line in order to pass the AC magnetic field at the location where Optimal placement of the combination of the excitation coil and the detection coil according to the state of warmth to ensure the bobbin type classification without relying on human labor. Since it, automated production lines, simplification, labor saving can be realized, production efficiency can be greatly improved.

Further, the detection element has a disk-shaped collar portion and a leg portion in which a magnetic marker is embedded, and has a T-shaped cross section as a whole to stabilize the magnetic marker and prevent damage during operation. The correct operation can always be maintained without being affected.

[Brief description of drawings]

FIG. 1 is a schematic view partially showing a main configuration of an apparatus to which a method of the present invention is applied for a bobbin wound with a thread.

FIG. 2 is a schematic diagram showing a yarn production line to which the method of the present invention is applied.

3A to 3C are partially peeled perspective views showing configurations of various detection elements in which magnetic markers in which magnetic thin wires are arranged in parallel are embedded in a plastic plate.

FIG. 4 is a Φ-H characteristic diagram of each magnetic thin wire shown in FIG.

5A is an AC magnetic field waveform diagram, and FIG. 5B is FIG. 3A.
Pulse voltage train generated in the detection coil when using the detection element shown in

6 is a Φ-H characteristic diagram of each magnetic wire shown in FIG. 3 (b).

FIG. 7A is an AC magnetic field waveform diagram, and FIGS. 7B to 7G are pulse voltage train diagrams generated in the detection coil when various magnetic markers in which the number of magnetic thin wires are changed are used.

FIG. 8A is a perspective view showing the shape of a detection element suitable for attachment to a bobbin, and FIG. 8B is a side view showing the detection element attached to the bobbin.

FIG. 9 is a schematic diagram partially showing a main part configuration of an apparatus to which the method of the present invention is applied when the central axis of an empty bobbin is parallel to the transport direction.

FIG. 10 is a schematic diagram partially showing the main configuration of an apparatus to which the method of the present invention is applied when the central axis of an empty bobbin is perpendicular to the transport direction.

FIG. 11 is a schematic diagram showing the inclination of an empty bobbin.

FIG. 12 is a magnetic characteristic diagram of a magnetic thin wire used for identifying an empty bobbin.

FIG. 13 is a waveform diagram of an AC magnetic field applied to a magnetic wire when identifying an empty bobbin.

FIG. 14 is a pulse voltage train diagram generated in the detection coil when the alternating magnetic field direction and the magnetic marker direction are the same.

FIG. 15: The direction of the magnetic marker is 45 in the direction of the alternating magnetic field.
Pulse voltage train generated in the detection coil when tilted

FIG. 16 is a flow diagram of a bobbin wound on a production line of a spinning factory.

[Explanation of symbols]

1 roving machine 2 case transfer line 3 case conveyor control box 4 roving bobbin hopper 5 case stock line 6 roving bobbin transfer line 7 spinning machine 8 spinning bobbin feeder 9 spinning bobbin transfer line 10 empty roving bobbin recovery line 11 empty roving bobbin hopper 12 bobbin loader 13 bobbin loader control box 14 magnetic marker 14a magnetic marker 14b magnetic marker 14c magnetic marker 15 bobbin bobbin 15a empty bobbin 16 support stand 17 transport line 18a exciting coil 18b exciting coil 18c exciting coil 18d exciting coil 19 AC power source 20 detection coil 21 the compensating coil 22 amplifier 23 magnetic marker validator 24 wound bobbin automatic carrier controller 25a bobbin validator 25b bobbin validator 25c bobbin discriminator 26a detected Child 26b detecting element 26c detecting element 26d detecting element 27a amorphous magnetic wire 27b amorphous magnetic wire 27c amorphous magnetic wire 27d amorphous magnetic wire 28 plastic plate 29a amorphous magnetic wire 29b amorphous magnetic wire 29c Amorphous magnetic thin wire 29d Amorphous magnetic thin wire 30 Collar part 31 Leg part 32 Measuring device

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Mitsuo Yamashita 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd.

Claims (7)

[Claims] 1. A large number of cylindrical bobbins each having a thread wound thereon and a plurality of cylindrical empty bobbins not having a thread wound thereon are running on the transfer line of a bobbin transfer device while the bobbins are wound with the threads or the empty threads. In order to classify the types of bobbins, a magnetic marker in which magnetic fine wires having rectangular magnetic characteristics are arranged in parallel is attached to each bobbin, or a detection element equipped with a magnetic marker is attached, and the bobbin transporting device is provided at a position necessary for the classification. A bobbin identifying device is installed on the bobbin to read the type of each bobbin, and a bobbin identifying method using a magnetic marker is provided. 2. The method according to claim 1, wherein each bobbin wound with a yarn has a longitudinal direction perpendicular to a traveling direction of the bobbin, and the bobbins are vertically opposed to each other with the transport line interposed therebetween to form an AC power source. Two exciting coils that are connected to each other to generate an AC magnetic field, a detection coil that is provided inside these exciting coils and that extracts the magnetic flux change of the magnetic marker attached to the bobbin by the AC magnetic field as a pulse voltage train, and the AC magnetic field itself. A compensation coil for canceling a pulse voltage generated in the detection coil due to a magnetic field change, an amplifier connected to the detection coil and the compensation coil, a noise signal connected to the amplifier to remove a noise signal, and perform signal processing to identify the bobbin. Using a bobbin identifying machine having a magnetic marker identifying machine to perform and a bobbin automatic transfer controller connected to the magnetic marker identifying machine, Identification method of winding bobbins with magnetic markers, characterized by reading the type of bottle. 3. The method according to claim 1, wherein the longitudinal direction of the empty bobbin in which the yarn is not wound is parallel to the running direction of the bobbin, and the bobbin is connected to an AC power source to generate an AC magnetic field in the running direction. The two excitation coils in which the carrier line penetrates the central part, and a pulse voltage train for changing the magnetic flux of the magnetic marker attached to the bobbin by the AC magnetic field, which is provided in the vicinity of the carrier line and located immediately below the carrier line. As a detection coil, a compensation coil for canceling a pulse voltage generated in the detection coil due to a change in the magnetic field of the AC magnetic field itself, an amplifier connected to the detection coil and the compensation coil, and a noise signal connected to the amplifier. A magnetic marker identifying device for performing signal processing to identify the bobbin, and a bobbin automatic carrier control device connected to the magnetic marker identifying device. Identification method of winding bobbins with magnetic markers, characterized by reading the type of the bobbin with a bobbin validator and a machine. 4. The method according to claim 1 or 3, wherein a magnetic fine wire for a reference signal is added to the magnetic marker or the detection element to prevent the direction of the magnetic marker or the magnetic detection element from differing from the alternating magnetic field. A method for identifying a wound bobbin using a magnetic marker, characterized in that a pulse voltage generation time from a detection coil is corrected using a reference signal obtained by the magnetic thin wire. 5. The method according to claim 1, wherein the longitudinal direction of the empty bobbin in which the thread is not wound is perpendicular to the traveling direction of the bobbin, and the empty bobbin is arranged opposite to both sides of the transport line and connected to an AC power source. And two exciting coils that generate an AC magnetic field in a direction perpendicular to the traveling direction, and magnetic flux of a magnetic marker attached to the bobbin by the AC magnetic field, which is located in the middle of these exciting coils and immediately below the carrier line. A detection coil that extracts changes as a pulse voltage train,
A compensation coil for canceling a pulse voltage generated in the detection coil due to a change in the magnetic field of the alternating magnetic field itself, an amplifier connected to the detection coil and the compensation coil, a noise signal connected to the amplifier to remove a noise signal, and perform signal processing to Using a magnetic marker characterized by reading the type of the bobbin using a bobbin identifying machine having a magnetic marker identifying machine for identifying a bobbin and a bobbin automatic transfer controller connected to the magnetic marker identifying machine Identification method of bobbin. 6. The method according to claim 1 or 5, wherein a magnetic thin wire for a reference signal is added to the magnetic marker or the detection element to prevent the direction of the magnetic marker or the magnetic detection element from differing from the direction of the alternating magnetic field. A method for identifying a wound bobbin using a magnetic marker, characterized in that a pulse voltage generation time from a detection coil is corrected using a reference signal obtained by the magnetic thin wire. 7. A magnetic element embedded in a leg having a T-shaped cross section, which is integrally formed in the center of a disk-shaped brim portion in a direction perpendicular to the center of the disc-shaped brim portion. A detection element having a marker, wherein the flange is fitted and fixed to one end of the cylindrical bobbin so that the longitudinal direction of the magnetic marker coincides with the axial direction of the cylindrical bobbin. ..