JP2004185885A - Detecting method of remaining quantity of wire body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detecting method of a remaining quantity of a wire body, by which the remaining quantity of the wire body wound around a bobbin can be detected precisely with a simple device without a complicated mechanism. <P>SOLUTION: A wire body gathering device gathers a plurality of wire bodies supplied from respective plurality of bobbins around which the respective plurality of wire bodies are wound previously, and winds them with a winder via a drawing equipment, wherein the detection of the remaining quantity of the wire body wound around the bobbin is carried out in such a way that, a light reflector is disposed at a position where a quantity of a laser beam reflected from the wire body wound around the bobbin increases inversely proportional to a reduction quantity of the wire body wound around the bobbin, a light receiver is disposed at a position where a reflected light from the light reflector can be received, and the remaining quantity of the wire body wound around the bobbin is detected from the received quantity of the light reflected from the light reflector. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, for example, while supplying a linear body such as various holding cords and holding tape wound together with communication lines and power lines or optical fibers such as optical fibers, from the bobbin around which these linear bodies are wound, to the collecting device, The present invention relates to a method for accurately detecting the remaining amount of these linear bodies wound around a bobbin, and more particularly to a method for detecting the remaining amount of linear bodies using transmitted light or reflected light of laser light.
[0002]
[Prior art]
For example, a certain number of wire bodies such as communication lines and power lines obtained by applying insulation to optical fibers and copper conductors, and various wire bodies such as various holding cords and holding tapes assembled together with these wire bodies are twisted in a certain number. When they are gathered together, these various linear bodies are unwound from a bobbin that has been wound up beforehand toward the gathering device.
At this time, since the length of the wire wound in advance on each bobbin is not always the same length, the remaining amount of the wire wound on each bobbin is detected by some method, and It is necessary to know in advance whether the remaining amount of the linear body is becoming the smallest. If the remaining amount of the linear body wound on the bobbin is not recognized, the terminal of the linear body is escaped, and the connection with the linear body wound on the next bobbin, which must be originally connected to the terminal, There is a problem that the work becomes difficult, or in the worst case, the collective work is continued without knowing that a certain linear body has disappeared, and a large number of defective products are continuously produced.
[0003]
Therefore, an operator who visually confirms that the remaining amount of the linear body wound around a certain bobbin has become small is usually close to the linear body supply device on which the bobbin whose remaining amount is small is mounted. At that time, it was about to reach the limit, and the collecting device was stopped, and the bobbin that had run low was replaced with a new full bobbin.
However, since the monitoring was only performed by the eyes of the operator, the collecting device was sometimes stopped, but the remaining amount had not reached the bobbin replacement time, and the bobbin was not replaced again. .
In the worst case, the worker is distracted by other work, misses the bobbin replacement time, and as a result, the linear terminal is missed, and the assembly of cables and the like manufactured up to that time becomes defective. There was also.
[0004]
Therefore, various studies have been made to automate the operation of checking the remaining amount of the linear body without relying on the visual observation of an operator.
For example, in Patent Document 1, a plurality of bobbins around which a linear body is wound are respectively mounted on bobbin support shafts provided on a disk-shaped rotary body at equal intervals in a circumferential direction of the disk-shaped rotary body. In the linear body assembly device mounted and feeding out the linear body from each bobbin, a plurality of markers are provided on an outer peripheral portion of the disk-shaped rotary body in correspondence with the bobbin support shafts, while one of the disk-shaped rotary bodies is provided. A marker detecting means for sequentially detecting the passage of each marker is provided outside the body, and a bobbin corresponding to the marker detected in synchronization with the detection of each marker by the marker detecting means is provided outside the bobbin supporting shaft. Providing distance detecting means for sequentially detecting the separation distance from the outer peripheral surface of the support shaft side, the remaining amount monitoring unit, each detection distance detected by the distance detecting means, the known empty bobbin distance and bobbin exchange distance Determine between Idea of, detecting a time to replace the bobbin Te have been disclosed.
[0005]
Patent Document 1: JP-A-11-246119
[0006]
[Problems to be solved by the invention]
However, in this method, it is necessary to take a signal synchronized with the rotation of the disk-shaped rotator, so that a method and a mechanism for detecting the rotation, and a controller for performing the calculation for controlling the timing and a calculation are required. is there.
In addition, when the disk-shaped rotator rotates at a high speed, it is necessary to accurately synchronize the rotation detection with the timing monitored by the sensor, so that there is a problem that the mechanism of the apparatus becomes complicated.
[0007]
SUMMARY OF THE INVENTION In order to solve the above-described problems, an object of the present invention is to provide a method for detecting the remaining amount of a linear body that can accurately detect the remaining amount of a striatum wound on a bobbin with a simple device without the need for a complicated mechanism. Is to provide.
[0008]
[Means for Solving the Problems]
Therefore, in order to achieve the above object, a method for detecting the remaining amount of a linear body according to claim 1 of the present invention supplies a linear body wound around the bobbin from a plurality of bobbins, and supplies the supplied linear body. In the method for detecting the remaining amount of the linear body wound on the bobbin in the linear body collecting apparatus, the amount of the linear body wound on the bobbin The light reflector is provided at a position where the amount of reflection of the laser light emitted from the laser emitter increases in inverse proportion to the decrease of the light receiver, and the light receiver is provided at a position capable of receiving the reflected light from the light reflector, The remaining amount of the linear body wound around the bobbin is detected from the amount of light received from the light reflecting plate.
[0009]
According to this method, a laser detector, a light reflector, and a simple detector including a light receiver are mainly used, and the laser light emitter, the light reflector, and the light receiver are positioned at appropriate positions near a bobbin. By simply obtaining a calibration curve (calibration curve) indicating the relationship between the amount of the linear body wound on the bobbin and the reflected light amount in advance, the remaining amount of the linear body wound on the bobbin can be detected accurately. can do.
Of course, since the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance, if the reflection amount of the laser beam at the time of bobbin replacement is checked in advance, the amount of light received by the light receiver becomes that value. It is easy to automatically stop the linear body assembling device at the time, and to notify the operator via the alarm or the like that the bobbin replacement time has come.
[0010]
According to a second aspect of the present invention, there is provided a method for detecting the remaining amount of a linear body, comprising supplying a linear body wound around the bobbin from a plurality of bobbins, assembling the plurality of supplied linear bodies, and using a take-up machine. In the method for detecting the remaining amount of the linear body wound on the bobbin in the linear body assembly device wound by the winder, the laser light emitter is inversely proportional to the decrease in the amount of the linear body wound on the bobbin. A light receiver is provided at a position where the transmitted light amount of the laser light emitted from is increased, and the transmitted light is directly received, and the remaining amount of the linear body wound around the bobbin is detected from the received light amount of the light receiver. It is characterized by the following.
[0011]
According to this method, an extremely simple detection device mainly composed of a laser light emitter and a light receiver is used, and the laser light emitter and the light receiver are positioned at appropriate positions in the vicinity of the bobbin, and are wound on the bobbin in advance at this position. The remaining amount of the linear body wound on the bobbin can be accurately detected simply by setting a calibration curve (calibration curve) indicating the relationship between the amount of the linear body and the transmitted light.
Of course, even in the case of this method, the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance. It is easy to automatically stop the linear assembly device when the value reaches that value, or to notify the operator that the time for bobbin replacement has come via an alarm or the like. No more mistakes.
[0012]
According to a third aspect of the present invention, there is provided a method for detecting the remaining amount of a linear body, comprising supplying a linear body wound around the bobbin from a plurality of bobbins, assembling the plurality of supplied linear bodies, In the method for detecting the remaining amount of the linear body wound on the bobbin in the linear body assembly device wound by the winder, the laser is only used when the amount of the linear body wound on the bobbin becomes equal to or less than a predetermined amount. A light reflecting plate is provided at a position where the laser light emitted from the light emitting device is reflected, and a light receiving device is provided at a position where the reflected light from the light reflecting plate can be received, and the amount of the linear body wound around the bobbin is provided. Is smaller than a predetermined amount, the reflected light from the light reflecting plate is received to detect that the remaining amount of the linear body wound around the bobbin is smaller than a predetermined amount. .
[0013]
This method is a so-called point detection, which is different from the first and second aspects of the invention, in that it detects that the remaining amount of the linear body wound around the bobbin is approaching the bobbin replacement time. In the case of this method as well, as in the case of claim 1, the detection device can be formed mainly by the laser light emitter, the light reflecting plate and the light receiving device, and the amount of the linear body having the light reflecting plate wound around the bobbin. Is less than the predetermined amount, it is only necessary to install the receiver at the position where the laser light emitted from the laser emitter is reflected and at the position where the light reflected from this light reflector can be received. Can be accurately detected, and that effect can be reliably transmitted to an operator by an alarm or the like, and the linear assembly device can be easily stopped automatically.
[0014]
Further, in the method for detecting the remaining amount of a linear body according to claim 4, a linear body wound around the bobbin is supplied from a plurality of bobbins, the supplied linear bodies are assembled, and the take-up machine is used. In the method for detecting the remaining amount of the linear body wound on the bobbin in the linear body assembly device wound by the winder, the laser is only used when the amount of the linear body wound on the bobbin becomes equal to or less than a predetermined amount. A light receiver is provided at a position where the laser light emitted from the light emitter can be directly received, and the amount of the linear body wound on the bobbin becomes equal to or less than a predetermined amount, and the light receiver receives the laser light. It is characterized in that it detects that the remaining amount of the linear body wound around the bobbin has become less than a predetermined amount.
[0015]
According to this method, the remaining amount of the linear body wound around the bobbin is approaching the bobbin replacement time, similarly to the method according to the third aspect, by an extremely simple detection device mainly including a laser emitter and a light receiver. This is so-called point detection.
In the case of this method, since the light reflecting plate is unnecessary as compared with the third embodiment, the whole apparatus is simpler. In the case of this method as well, the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance. It is easy to automatically stop the linear body assembling device at the time when the value reaches the value, and to notify the operator that the bobbin replacement time has come through an alarm or the like.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example in which the method for detecting the remaining amount of a linear body of the present invention is applied to an assembly apparatus for linear bodies, specifically, an example in which the method is applied to an assembly apparatus for optical fibers will be described.
FIG. 1 is an overall schematic diagram of an optical fiber aggregation device. This optical fiber aggregation device is a tension member supply device 1 for supplying a central tension member 2 composed of an optical fiber assembly, so-called FRP disposed at the center of an optical cable. An optical fiber supply device 4 for supplying a plurality of optical fibers 3 gathered around the tension member 2, and a bobbin thread 5 for holding down and winding at a predetermined pitch so as not to break the twist of the aggregated optical fiber assembly. The apparatus mainly includes a presser winding yarn supplying device 6 to supply, an optical fiber assembly 7 thus pressurized and wound through a pulling device 8, and finally a winding device 10 for winding the same.
[0017]
The rotation speeds of the optical fiber supply device 4 and the presser winding yarn supply device 6 and the take-up speed of the take-up device 8 are each operated at a predetermined speed ratio, whereby the optical fibers 3 are twisted at a predetermined twist pitch. The presser winding yarn 5 is press-wound at a predetermined presser winding pitch.
[0018]
Incidentally, in this type of optical fiber collecting device, the optical fiber supply device 4 and the presser winding yarn supply device 6 rotate around the central axis of the assembly, and the winding device 10 does not rotate but simply winds. Conversely, there are three types: a type in which the optical fiber supply device 4 and the presser winding yarn supply device 6 do not rotate and the take-up device 10 rotates, or a type in which both rotate in synchronization. However, the invention is applicable to any type. However, the effect is remarkable when applied to a type in which the optical fiber supply device 4 and the presser winding yarn supply device 6 rotate. Therefore, the following description is based on the type in which the optical fiber supply device 4 and the presser winding yarn supply device 6 rotate.
[0019]
FIG. 2 shows an embodiment in which the method for detecting the remaining amount of a linear body according to the present invention is applied to a presser winding yarn supply device 6.
On the rotating disk 15 of the rotating presser yarn supplying device 6, the presser winding yarns 5 are arranged at equal intervals in the circumferential direction of the rotary disk 15 with respect to the center axis of the optical fiber assembly 7 passing through the center cavity. In FIG. 2, three bobbins 20 are provided on a bobbin support shaft 21 erected on the rotating disk 15. Of course, this number may be one, two, or three or more, and is determined based on the specifications of the optical fiber assembly 7 to be manufactured.
[0020]
The presser winding thread 5 unwound from the bobbin 20 is press-wound at a predetermined pitch around the optical fiber assembly 7 which is guided by the guide 25 and passes through the center of the rotating disk 15, is taken up by the take-up device 8, and is not shown. It is wound up by the winding device 10. The rotation speed of the rotating disk 15 of the presser winding yarn supplying device 6 and the take-up speed of the take-up device 8 are operated at a predetermined speed ratio. As a result, the presser winding yarn 5 is pressed onto the optical fiber assembly 7 at a predetermined pitch. Is done.
[0021]
A laser sensor device 101 having a laser emitter and a photodetector at a position distant from the presser winding yarn supply device 6 but near the presser yarn supply device 6 and separately from the presser yarn supply device 6. Is installed. The laser sensor device 101 has an XY adjustment table 105 for adjusting the XY directions of the laser light 100 emitted from the mounted laser light emitter 110. A light reflecting plate 102 is affixed on the flange on the rotating disk 15 side of the bobbin 20 on the straight line front of the laser light 100. The accurate position of the light reflecting plate 102 is a position indicating that the remaining amount of the presser winding thread 5 wound on the bobbin 20 has reached the time to replace the bobbin 20. Until the light reflection plate 102 is at a position where it is shielded by the presser winding thread 5 wound on the bobbin 20, the laser reflection plate 102 is received at a position where the laser light 100 is received and reflected therefrom only when the remaining amount to be replaced is reached. I have.
[0022]
At the time when the remaining amount of the presser winding thread 5 wound on the bobbin 20 becomes low and the remaining time has to be replaced with a new bobbin 20, the presser winding thread 5 that has been wound on the bobbin 20 is used. The laser light 100 from the laser light emitter 110 that has been blocked reaches the light reflecting plate 102 for the first time, is reflected, and returns to the laser sensor device 101. The returned reflected light is received by a light receiver in the laser type sensor device 101 and outputs an output signal 103.
The laser sensor device 101 outputs the output signal 103 only when the reflected light from the light reflecting plate 102 returns. Therefore, even if the reflected light from another obstacle gets into the light receiver of the laser sensor device 101, there is no possibility of erroneous detection.
[0023]
FIG. 3 is a detailed enlarged view around the bobbin 20. As shown in FIG. 3, the bobbin 20 is covered with a hood 22, and a laser transmission hole 23 is opened at a portion where the laser light 100 passes. The above-mentioned light reflection plate 102 is stuck on the flange on the side of the rotating disk 15 of the bobbin 20 beyond the laser transmission hole 23.
As shown in FIG. 3 (a), the position where the light reflecting plate 102 is stuck until the amount 20a of the presser winding thread 5 wound on the bobbin 20 becomes the remaining amount of the replacement time as described above. The light reflecting plate 102 is a position shielded by the presser winding thread 5, and as shown in FIG. 3B, a position where the laser beam 100 is received and reflected only when the remaining amount 20b to be replaced is reached.
Incidentally, the laser transmission hole 23 is provided for each hood 22 of each bobbin 20, and its position is on the same circumference as viewed from the center axis of the presser winding yarn supply device 6, that is, the center of the rotating disk 15. Then, when the rotating disk 15 rotates, it is pierced at a position coinciding with the optical axis of the laser light 100 emitted from the laser light emitter of the laser sensor device 101 provided separately from the presser winding yarn supply device 6. ing.
[0024]
Similarly, the light reflecting plate 102 is also provided on the flange of the bobbin 20 on the side of the rotating disk 15, and the position is the position that coincides with the optical axis of the laser beam 100 when the rotating disk 15 rotates.
FIG. 3A shows a state 20a in which the bobbin 20 is still wound with the presser winding thread 5, and shows a state in which the laser beam 100 is blocked by the presser winding thread 5, and FIG. ) Shows the state of the remaining amount 20b at the time of replacing the bobbin 20, with the presser winding thread 5 wound around the bobbin 20 being reduced. Only after the state shown in FIG. 3B, the laser 100 reaches the light reflecting plate 102, is reflected by the light reflecting plate 102, returns to the light receiver of the laser sensor device 101, is detected, and the output signal 103 is output. Is done.
[0025]
In the embodiment shown in FIGS. 2 and 3, the laser beam 100 reaches the light reflecting plate 102 only when the remaining amount of the presser winding thread 5 wound on the bobbin 20 reaches an amount corresponding to the bobbin replacement time. The reflected light returns to the laser-type sensor device 101, is received by the light receiver, and outputs an output signal 103. Separately, an elongated light reflecting plate 102 is prepared, and this is used as a rotating disk of the bobbin 20. Affixed on the 15 side flange in the radial direction of the bobbin 20, even when the presser winding thread 5 was fully wound, partially received the laser beam 100 and reflected it, and the remaining amount was equivalent to the replacement time of the bobbin 20. The laser light 100 may be continuously reflected until time. In this way, the amount of the reflected light of the laser beam 100 increases in inverse proportion to the decrease of the presser winding yarn 5.
[0026]
Then, the relationship between the amount of the presser winding thread 5 wound on the bobbin 20 in advance and the amount of reflection reflected by the light reflecting plate 102 and returning to the light receiver of the laser sensor device 101 is examined to form a calibration curve. If the amount of reflected light changes, the remaining amount of the presser winding thread 5 wound around the bobbin 20 at that time can be detected. In this case, if the remaining amount reaches an amount corresponding to the replacement time of the bobbin 20, the optical fiber collecting device is automatically stopped or an alarm is issued to the operator, so that the operator can perform other work with ease. It is only necessary to start the replacement work of the bobbin 20 when the warning is heard.
[0027]
In the embodiment shown in FIGS. 2 and 3, for example, the rotation speed of the rotating disk 15 is 1500 rpm, the response speed of the laser sensor device 101 is 80 μs, and the distance between the optical axes of the laser light 100 from the center of the rotating disk 15 is The laser light reflection range of the light reflection plate 102 is 200 mm, and the laser transmission hole 23 is a circle having a radius of 15 mm centered on the optical axis of the laser light. In this configuration, the response speed required for detecting the remaining amount of the presser winding yarn 5 is as follows.
{60 (sec) / 1500 (rpm)} × {23 (mm) / 200 × 2π (mm)} = 732 μs> 80 μs
Therefore, even if the rotating disk 15 rotates at its maximum speed, a response speed sufficient to detect the remaining amount of the presser winding yarn 5 can be obtained.
[0028]
FIG. 4 is a perspective view of a presser winding yarn supply device 6 showing another embodiment of the present invention. The same elements as those in FIG. 2 are denoted by the same reference numerals, and detailed description will be omitted.
In the embodiment of FIG. 4, the laser transmission holes 33 are provided in both the flanges of the bobbin 20 and the rotating disk 15 which coincide with the optical axis of the laser light 100, and a light receiver 202 is provided in front of the holes 33 separately from the optical fiber collecting device. Things.
When the bobbin 20 has no flange, it goes without saying that the laser transmission hole 33 may be provided only in the rotary disk 15. The laser transmission holes 33 are provided for each bobbin 20, and the positions thereof are on the same radius as viewed from the center of the rotary disk 15, and each bobbin 20 is positioned on the optical axis of the laser beam 100 as shown in FIG. The laser beam 100 passes through the laser transmission hole 33 when it comes to the upper side.
[0029]
In this case, when the amount of the presser winding thread 5 of the bobbin 20 mounted on the presser feeder 6 is still sufficient, the presser winding thread 5 wound on the bobbin 20 blocks the laser beam 100, and the remaining amount decreases. When the bobbin 20 is about to be replaced, the laser beam 100 passes through the flange and the laser transmission hole 33 provided in the rotating disk 15 and reaches the light receiver 202 for the first time. When the remaining amount of the bobbin 20 reaches the limit and the laser light 100 reaches the light receiver 202, the light receiver 202 outputs a signal 203 indicating that the light has been received, and automatically stops the optical fiber assembly device or informs the operator. It informs you when it is time to replace the bobbin.
[0030]
Here, a light reflecting plate 102 is provided in place of the light receiver 202, and the laser beam 100 is first turned on when the bobbin 20 is replaced and the presser winding thread 5 of the bobbin 20 is reduced, similarly to the embodiment described with reference to FIGS. Passes through the laser transmission hole 33 to reach the light reflecting plate 102, where it is reflected and returns to the laser-type sensor device 101, and an output indicating that the remaining amount of the bobbin 20 is low and it is time to replace the bobbin 20. The signal 103 may be output.
[0031]
Separately, an elongated light receiver 202 is provided, which is installed in the radial direction of the bobbin 20, receives a part of the laser beam 100 even when the presser winding thread 5 is fully wound, receives the laser beam 100, and The laser beam 100 may be continuously received until the remaining amount corresponding to the replacement time is reached. In this way, the amount of the laser beam 100 received by the light receiver 202 increases in inverse proportion to the decrease in the presser winding thread 5.
[0032]
Then, the relationship between the amount of the presser winding thread 5 wound on the bobbin 20 and the amount of light received by the light receiver 202 is examined in advance, and a calibration curve is created. It is possible to detect the remaining amount of the presser winding thread 5 wound on the sheet 20. In this case, when the amount of received light reaches a predetermined value and the remaining amount of the presser winding thread 5 reaches an amount corresponding to the time to replace the bobbin 20, the optical fiber collecting device is automatically stopped or an alarm is issued to the operator. If this is done, the worker can be doing other work with peace of mind, and the replacement work of the bobbin 20 may be started when the alarm is heard.
[0033]
FIG. 5 shows still another embodiment of the present invention. Components having the same names as those in FIGS. 2 to 4 are denoted by the same reference numerals, and detailed description is omitted.
This embodiment is characterized in that the laser beam 100 from the laser sensor device 101 is applied to the bobbin 20 not from the axial direction of the bobbin 20 but from the radial direction.
A laser transmission hole 23 is provided in a hood 22 that covers the bobbin 20, and a light reflection plate 102 is attached to an inner surface of the hood 22. The position of the light reflecting plate 102 is a position indicating that the remaining amount of the presser winding thread 5 wound around the bobbin 20 has reached the time to replace the bobbin 20. The light reflecting plate 102 is a position where the light reflecting plate 102 is interrupted by the presser winding thread 5 wound around the bobbin 20 until the amount reaches the amount, and the light reflecting plate 102 receives the laser light 100 only when the remaining amount to be replaced is reached, and is attached to a position where the laser light 100 is reflected. ing. Other detection operations are the same as those of the embodiments described above.
[0034]
Also in this embodiment, an elongated light reflecting plate 102 is prepared and attached in the circumferential direction inside the hood 22, and even when the presser winding thread 5 is fully wound, the laser beam 100 is partially received and reflected. Alternatively, the laser beam 100 may be continuously reflected until the remaining amount corresponding to the replacement time of the bobbin 20 is reached.
[0035]
In this way, the amount of the reflected light of the laser beam 100 increases in inverse proportion to the decrease of the presser winding yarn 5.
Then, the relationship between the amount of the presser winding thread 5 wound on the bobbin 20 in advance and the amount of reflection reflected by the light reflecting plate 102 and returning to the light receiver of the laser sensor device 101 is examined to form a calibration curve. If the amount of reflected light changes, the remaining amount of the presser winding thread 5 wound around the bobbin 20 at that time can be detected.
In this case, if the remaining amount reaches an amount corresponding to the time for replacing the bobbin 20, the optical fiber collecting device is automatically stopped or an alarm is issued to the operator, so that the operator can safely perform other operations. The user can do so, and when he hears the alarm, the user can start replacing the bobbin 20.
[0036]
In each of the above-described embodiments of the present invention, an example has been described in which the present invention is applied to the bobbin for the presser winding thread mounted on the presser winding thread supply device 6, but the optical fiber supply device 4 shown in FIG. The same applies to bobbins.
In addition, the present invention can be similarly applied to the respective bobbins 20 of the optical fiber supply device 4 and the presser winding yarn supply device 6 in which the winding device 10 rotates without the optical fiber supply device 4 and the presser winding yarn supply device 6 rotating. Needless to say, the present invention can be applied to each optical fiber supply device 4 and each bobbin of the holding yarn supply device 6 in which the winding device 10 also rotates in synchronization with the optical fiber supply device 4 and the holding yarn supply device 6. Absent.
Further, the present invention can be similarly applied to an aggregation device of another linear body such as an aggregation device for a power cable other than the optical fiber aggregation device.
[0037]
【The invention's effect】
As described above, according to the method for detecting the remaining amount of a linear object according to claim 1 of the present invention, a simple detector mainly including a laser emitter, a light reflecting plate and a light receiver, and these laser emitters By simply positioning the light reflector and the light receiver at an appropriate position near the bobbin, it is only necessary to preliminarily obtain a calibration curve indicating the relationship between the amount of the linear body wound on the bobbin and the amount of reflected light at this position in advance. In addition, the remaining amount of the linear body wound on the bobbin can be accurately detected.
Also, since the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance, if the reflection amount of the laser light corresponding to the remaining amount at the time of bobbin replacement time is checked in advance, the amount of light received by the light receiver will be that It is easy to automatically stop the linear body assembling device when the value reaches the value, and to notify the operator that the bobbin replacement time has come via an alarm or the like.
[0038]
According to the method for detecting the remaining amount of a linear object according to claim 2, an extremely simple detection device mainly comprising a laser light emitter and a light receiver, and the laser light emitter and the light receiver are positioned at appropriate positions near the bobbin. The remaining amount of the linear body wound on the bobbin can be accurately detected simply by taking a calibration curve indicating the relationship between the amount of the linear body wound on the bobbin and the transmitted light at this position in advance. can do.
Even in the case of this method, the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance. Can be easily notified to the operator via, for example, an alarm device that the bobbin replacement time has come.
[0039]
According to the method for detecting the remaining amount of the linear body according to the third aspect, similarly to the invention according to the first aspect, the detection apparatus has a simple configuration mainly including a laser light emitter, a light reflection plate, and a light receiver. The position where the laser light emitted from the laser emitter is reflected only when the amount of the linear body around which the light reflecting plate is wound around the bobbin is less than a predetermined amount, and the position where the reflected light from this light reflecting plate can be received. By simply providing a photodetector, it is possible to accurately detect the bobbin replacement time, automatically stop the linear assembly device, and easily notify the worker of the fact by an alarm or the like. .
[0040]
Further, according to the method for detecting the remaining amount of a linear body according to the fourth aspect, a very simple detection device mainly comprising a laser emitter and a light receiver is used to wind the bobbin just like the method according to the third aspect. It is possible to accurately detect that the remaining amount of the drawn linear body is approaching the bobbin replacement time.
Also in this method, since the remaining amount of the linear body on the bobbin at the time of bobbin replacement is known in advance, if the transmitted light amount of the laser beam at the time of bobbin replacement is checked in advance, the amount of light received by the light receiver can be reduced. At that point, for example, the linear assembly device can be automatically stopped, or the operator can be notified that the bobbin replacement time has come via an alarm or the like. There is no mistake in the replacement time.
[0041]
Further, in any of the claims of the present application, it is possible to manage the bobbin replacement time of a plurality of bobbins of the linear body assembling apparatus only by preparing one set of laser-type sensor devices. Maintenance is easy.
[Brief description of the drawings]
FIG. 1 is an overall schematic diagram showing an example of an optical fiber aggregation device to which a method for detecting a remaining amount of a linear body according to the present invention is applied.
FIG. 2 is a perspective view of a presser winding yarn supply device showing an embodiment of a method for detecting the remaining amount of a linear body according to the present invention.
FIG. 3 is an enlarged perspective view around a bobbin of the presser winding yarn supplying device shown in FIG. 2;
FIG. 4 is a perspective view of a presser winding yarn supply device showing another embodiment of the method for detecting the remaining amount of a linear body according to the present invention.
FIG. 5 is a perspective view of a presser winding yarn supply device showing still another embodiment of the method for detecting the remaining amount of a linear body according to the present invention.
[Explanation of symbols]
4 Optical fiber supply device
5 Holding thread
6 Presser winding yarn feeder
7 Optical fiber assembly
8 Collection device
15 Rotating disk
20 bobbins
23 Laser transmission hole
33 Laser transmission hole
100 laser light
101 Laser type sensor device
102 Light reflector
202 Receiver
105 XY adjustment table

Claims (4)

The bobbin in the linear body assembly device, which supplies a linear body wound around the bobbin from a plurality of bobbins, collects the supplied plurality of linear bodies, and winds the collected linear bodies with a winding machine via a take-up machine. In the method for detecting the remaining amount of the linear body wound on the bobbin, the amount of reflection of laser light emitted from the laser emitter increases in inverse proportion to the decrease in the amount of the linear body wound on the bobbin. The plate is provided with a light receiver at a position where the light reflected from the light reflecting plate can be received, and the remaining amount of the linear body wound around the bobbin is detected from the amount of light received from the light reflecting plate. A remaining amount detection method for a linear body. The bobbin in the linear body assembly device, which supplies a linear body wound around the bobbin from a plurality of bobbins, collects the supplied plurality of linear bodies, and winds the collected linear bodies with a winding machine via a take-up machine. In the method for detecting the remaining amount of a linear body wound on a bobbin, a light receiver is provided at a position where the amount of transmitted laser light emitted from a laser emitter increases in inverse proportion to the decrease in the amount of the linear body wound on the bobbin. And detecting the remaining amount of the linear body wound around the bobbin from the amount of light received by the light receiving device. The bobbin in the linear body assembly device, which supplies a linear body wound around the bobbin from a plurality of bobbins, collects the supplied plurality of linear bodies, and winds the collected linear bodies with a winding machine via a take-up machine. In the method of detecting the remaining amount of the linear body wound on the bobbin, the light reflecting plate is located at a position where the laser light emitted from the laser emitter is reflected only when the amount of the linear body wound on the bobbin becomes a predetermined amount or less. A light receiver is provided at a position where the reflected light from the light reflecting plate can be received, and when the amount of the linear body wound on the bobbin becomes a predetermined amount or less, the reflected light from the light reflecting plate is reduced. A method for detecting the remaining amount of a linear body, comprising detecting that the remaining amount of the linear body wound around the bobbin upon receiving light is less than a predetermined amount. The bobbin in the linear body assembly device, which supplies a linear body wound around the bobbin from a plurality of bobbins, collects the supplied plurality of linear bodies, and winds the collected linear bodies with a winding machine via a take-up machine. In the method for detecting the remaining amount of the linear body wound on the bobbin, when the amount of the linear body wound on the bobbin becomes equal to or less than a predetermined amount, the light receiver is located at a position where the laser light emitted from the laser emitter can be directly received. And the remaining amount of the linear body wound on the bobbin is not more than a predetermined amount because the amount of the linear body wound on the bobbin is less than a predetermined amount and the light receiver receives the laser beam. A method for detecting the remaining amount of a linear body, characterized by detecting that the remaining time has been reached.

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