CN113945576A - Device and method for detecting unevenness of linear body - Google Patents
Device and method for detecting unevenness of linear body Download PDFInfo
- Publication number
- CN113945576A CN113945576A CN202110800971.4A CN202110800971A CN113945576A CN 113945576 A CN113945576 A CN 113945576A CN 202110800971 A CN202110800971 A CN 202110800971A CN 113945576 A CN113945576 A CN 113945576A
- Authority
- CN
- China
- Prior art keywords
- linear body
- guide roller
- light
- cover
- detection space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N2021/8924—Dents; Relief flaws
Landscapes
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
Abstract
Erroneous detection of irregularities on the linear body to be inspected can be reduced. The device for detecting unevenness of a linear body comprises: a light projecting section for projecting light to a traveling linear body; a light receiving unit for receiving the light projected from the light projecting unit; a first guide roller for guiding the travel of the upstream side of the linear body passing through the detection space between the light projecting part and the light receiving part; a second guide roller for guiding the downstream-side travel of the linear body passing through the detection space; a cover for covering the light projecting part, the light receiving part, the first guide roller and the second guide roller; and a supply unit that supplies the cleaning gas into the cover, wherein the cover is provided with a gas supply unit that communicates with the supply unit, an inlet-side opening into which the linear body enters, and an outlet-side opening from which the linear body exits.
Description
Technical Field
The present invention relates to an irregularity detection device and an irregularity detection method for a linear body.
Background
Patent document 1: japanese patent laid-open publication No. 2004-12414
Patent document 2: japanese patent laid-open publication No. 2013-28513
In a linear body such as an optical fiber, minute irregularities may locally occur on the outer periphery of a coated optical fiber element, an optical fiber core wire coated with a colored layer, or the like. If there are such irregularities, the mold hole may be closed by foreign matter due to the irregularities in the coloring step or the banding step. In this case, since a coating failure, a disconnection of the linear body, or the like occurs, it is necessary to detect the unevenness. Therefore, an irregularity detection device for a linear body that optically detects irregularities of the linear body is used (for example, patent document 1).
In the above-described irregularity detection device for a linear body, light may be blocked or scattered by floating dust, and irregularities of the linear body may be erroneously detected. Therefore, for example, in the irregularity detection device for a linear body disclosed in patent document 1, the detection space is covered with a cover, and clean gas is supplied into the cover to suppress the intrusion of floating dust into the detection space.
In addition, the linear body may enter the detection space in a state where the foreign matter is attached, and in this case, the unevenness of the linear body may be erroneously detected. Therefore, it is considered that the cleaning gas is strongly blown to the linear body before entering the detection space, and the foreign matter is blown off. However, if the flow rate of the cleaning gas is increased by attempting to remove the foreign matter, the linear body is affected by the flow of the cleaning gas, and the linear vibration becomes large. Therefore, the line vibration may be erroneously detected as the unevenness.
In order to increase the efficiency of the production of the linear body, it is desirable to increase the linear speed during the production, but if the linear speed of the linear body is increased, the linear vibration increases. Further, if the linear velocity of the linear body is increased, the possibility that foreign matter enters the detection space together with the linear body also increases.
Disclosure of Invention
An object of the present invention is to provide a linear body irregularity detection device and an irregularity detection method that can reduce erroneous detection of irregularities on a linear body to be inspected.
An irregularity detection device for a linear body according to an aspect of the present invention includes:
a light projecting section for projecting light to a traveling linear body;
a light receiving unit for receiving the light projected from the light projecting unit;
a first guide roller that guides the travel of the linear body on the upstream side, the linear body passing through a detection space between the light projecting section and the light receiving section;
a second guide roller that guides the downstream-side travel of the linear body passing through the detection space;
a cover for covering the light projecting section, the light receiving section, the first guide roller, and the second guide roller; and
a supply unit for supplying the cleaning gas into the cover,
the cover is provided with an air supply portion communicating with the supply portion, an inlet-side opening portion into which the linear body enters, and an outlet-side opening portion from which the linear body exits.
A method for detecting unevenness of a linear body according to an aspect of the present invention,
the cover covers the light projecting part, the light receiving part, the detection space, the first guide roller and the second guide roller, the detection space optically detects the concave-convex of the surface of the linear body through the light projecting part and the light receiving part,
a cleaning gas is supplied into the enclosure,
the linear body is made to enter the cover from a wire inlet side opening part provided in the cover,
the linear body entered into the cover is guided to the detection space by the first guide roller,
projecting light from the light projecting unit onto the linear body traveling in the detection space, receiving the projected light by the light receiving unit, and optically detecting irregularities on the surface of the linear body,
the linear body having passed through the detection space is guided by the second guide roller to a side outlet opening provided in the cover.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, erroneous detection of irregularities on a linear body to be inspected can be reduced.
Drawings
Fig. 1 is a schematic configuration diagram showing an example of a linear body irregularity detection device according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of the detecting section of FIG. 1 taken along line A-A.
Fig. 3 is a sectional view of the first guide roller or the second guide roller.
Fig. 4 is a sectional view of the peripheral groove of the first guide roller or the second guide roller.
Fig. 5 is a sectional view of a circumferential groove of a conventional guide roller.
Fig. 6 is a diagram illustrating behavior of foreign matter such as floating dust caused by ejection of the cleaning gas at the inlet-side opening portion of the cover.
Detailed Description
[ description of embodiments of the invention ]
First, embodiments of the present invention will be described.
The device for detecting unevenness of a linear body according to one aspect of the present invention,
(1) comprising:
a light projecting section for projecting light to a traveling linear body;
a light receiving unit for receiving the light projected from the light projecting unit;
a first guide roller that guides the travel of the linear body on the upstream side, the linear body passing through a detection space between the light projecting section and the light receiving section;
a second guide roller that guides the downstream-side travel of the linear body passing through the detection space;
a cover for covering the light projecting section, the light receiving section, the first guide roller, and the second guide roller; and
a supply unit for supplying the cleaning gas into the cover,
the cover is provided with an air supply portion communicating with the supply portion, an inlet-side opening portion into which the linear body enters, and an outlet-side opening portion from which the linear body exits.
According to the above-described irregularity detecting device for a linear body, the detection space is in the hood to which the clean gas is supplied, and therefore, entry of foreign matter such as floating dust can be suppressed. Guide rollers (first guide roller and second guide roller) that guide the optical fiber core wire before and after passing through the detection space are also in the hood to which the cleaning gas is supplied. Thus, the linear vibration of the optical fiber core wire caused by the wind pressure of the supplied cleaning gas is suppressed, and the optical fiber core wire can be stably moved in the detection space by the two guide rollers. This can reduce erroneous detection of irregularities on the optical fiber core wire in the inspection through the detection space.
(2) The first guide roller and the second guide roller may have a V-shaped peripheral groove,
the peripheral groove is provided with a first side surface and a second side surface which form a V shape,
the first side surface and the second side surface are formed to be in contact with the linear body traveling.
According to the above-described irregularity detection device for a linear body, the linear body traveling in the circumferential groove can be sandwiched by the two guide rollers (the first guide roller and the second guide roller), and thus the linear body can be suppressed from linear vibration.
A method for detecting unevenness of a linear body according to an aspect of the present invention,
(3) the cover covers the light projecting part, the light receiving part, the detection space, the first guide roller and the second guide roller, the detection space optically detects the concave-convex of the surface of the linear body through the light projecting part and the light receiving part,
a cleaning gas is supplied into the enclosure,
the linear body is made to enter the cover from a wire inlet side opening part provided in the cover,
the linear body entered into the cover is guided to the detection space by the first guide roller,
projecting light from the light projecting unit onto the linear body traveling in the detection space, receiving the projected light by the light receiving unit, and optically detecting irregularities on the surface of the linear body,
the linear body having passed through the detection space is guided by the second guide roller to a side outlet opening provided in the cover.
According to the above method for detecting unevenness of a linear body, since unevenness on the surface of the linear body is detected in the detection space in the cover to which the cleaning gas is supplied, it is possible to suppress foreign matter such as floating dust from entering the detection space. The guide rollers (first guide roller and second guide roller) in front of and behind the detection space are also covered with the cover. Thus, the linear body can be prevented from linear vibration caused by the wind pressure of the supplied cleaning gas, and the linear body can be stably moved in the detection space by the two guide rollers. This can reduce erroneous detection of irregularities on the linear body for inspection in the detection space.
(4) The cleaning gas may be ejected from the inlet-side opening to the outside of the cover. According to the above method for detecting irregularities of a linear body, irregularities on the surface of the linear body are detected while the cleaning gas is ejected from the wire inlet opening of the linear body of the cover to the outside of the cover. This can prevent foreign matter such as floating dust from entering the cover from the inlet-side opening due to the flow of the filament.
(5) The flow velocity of the cleaning gas ejected from the wire inlet side opening portion may be higher than the linear velocity of the linear body entering from the wire inlet side opening portion.
According to the above method of detecting unevenness of a linear body, the flow velocity of the cleaning gas ejected from the thread inlet side opening portion is higher than the linear velocity of the linear body entering from the thread inlet side opening portion, and therefore, it is possible to more reliably suppress foreign matter such as floating dust from entering the cover from the thread inlet side opening portion due to the drawing flow of the linear body.
[ details of embodiments of the present invention ]
Next, specific examples of the device and the method for detecting unevenness of a linear body according to the embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to these examples, but is defined by the claims, and includes all modifications equivalent in content and scope to the claims.
Fig. 1 is a schematic configuration diagram showing an example of a linear body irregularity detection device according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional view of the detection section 10 taken along line a-a. As shown in fig. 1, the irregularity detecting device 1 for a linear body of this embodiment includes a detecting section 10, a first guide roller 20, a second guide roller 30, a cover 40, and a supplying section 50.
The detection section 10 is provided such that the traveling optical fiber 2 (an example of a linear body) is located at the center of a detection space 12 formed so as to be surrounded by the detection section main body 11. The optical fiber core wire 2 is configured such that an optical fiber manufactured by a drawing process is coated with a plurality of resin layers and the outer periphery thereof is coated with a coloring layer.
The detector 10 has 2 pairs of light emitters 13 and light receivers 14. These are arranged so that 1 light receiving unit 14 faces 1 light projecting unit 13. A determination unit (not shown) connected to the light receiving unit 14 is provided inside the detection unit body 11. The determination unit continuously reads data of the amount of light received by the light receiving unit 14, calculates an average value of the amounts of light received accumulated for a predetermined time period immediately before the reading, and calculates a difference from the read value. When the difference exceeds a predetermined value, a signal for detecting unevenness is output.
The first guide roller 20 is provided to guide the traveling of the optical fiber core 2 passing through the detection space 12 on the upstream side (hereinafter, simply referred to as the upstream side) in the direction in which the optical fiber core 2 travels. The second guide roller 30 is provided to guide the travel of the optical fiber core 2 passing through the detection space 12 on the downstream side (hereinafter, simply referred to as the downstream side) in the direction in which the optical fiber core 2 travels.
The cover 40 is provided to cover the detection section 10, the first guide roller 20, and the second guide roller 30. The supply unit 50 is provided outside the cover 40 and supplies the cleaning gas 3 into the cover 40 as indicated by an arrow.
The cover 40 is provided with a wire-inlet-side opening 41 into which the optical fiber 2 enters, on the upstream-side surface 40 a. The side surface 40b on the downstream side is provided with an outlet-side opening 42 from which the optical fiber 2 comes out. Further, the side surface 40b is provided with an air supply portion 43 communicating with the supply portion 50.
Fig. 3 is a sectional view of the first guide roller 20 (second guide roller 30). Fig. 4 is a cross-sectional view of the circumferential groove of the first guide roller 20 (second guide roller 30) in a state where the optical fiber core wire 2 is running.
As shown in fig. 3, the first guide roller 20 and the second guide roller 30 each have a V-shaped peripheral groove 21 (31). The peripheral groove 21(31) has a first side 22(32) and a second side 23(33) forming a V-shape. As shown in fig. 4, the first guide roller 20 (second guide roller 30) is formed such that the angle formed by the first side surface 22(32) and the second side surface 23(33) becomes an acute angle, and the width W1 of the bottom surface 24(34) is smaller than the outer diameter R of the optical fiber core wire 2. The optical fiber 2 has an outer diameter of about 0.2 mm. Thus, the first side face 22(32) and the second side face 23(33) are formed in contact with the advancing optical fiber core wire 2.
Fig. 5 shows a cross section of a circumferential groove 121 of a typical conventional guide roller 120 in order to compare the structures of the circumferential grooves of the guide rollers (the first guide roller 20 and the second guide roller 30) used in the linear body irregularity detecting device 1 according to the present embodiment and the conventional guide rollers.
As shown in FIG. 5, in the conventional guide roller 120, the width W2 of the bottom 124 of the peripheral groove 121 is larger than the outer diameter R of the optical fiber 2. This is because high-precision machining is required to form the side surfaces 122 and 123 of the peripheral groove 121 at acute angles, and it is difficult to narrow the bottom 124 of the peripheral groove 121. Therefore, when the optical fiber 2 is advanced by using the conventional guide roller 120, the advanced position moves between the side surfaces 122 and 123 of the peripheral groove 121, and there is a possibility that the optical fiber is advanced with shaking. Therefore, there is a possibility that a wire vibration occurs when the optical fiber core wire 2 travels.
The first guide roller 20 (second guide roller 30) is formed so that the first side surface 22(32) and the second side surface 23(33) come into contact with the advancing optical fiber core wire 2, as opposed to the above-described conventional guide roller 120. Thereby, the advancing optical fiber core wire 2 can be sandwiched by the peripheral grooves 21 (31). Therefore, the wire vibration when the optical fiber core wire 2 travels can be suppressed.
Next, a method of detecting unevenness of the optical fiber core wire (an example of a linear body) 2 will be described with reference to fig. 1 to 4.
In this example, the unevenness of the colored layer is detected for the optical fiber core wire 2 coated with the colored layer in the coloring step. First, the cleaning gas 3 is supplied into the cover 40 as shown by an arrow in fig. 1. After the cap 40 is filled with the cleaning gas 3, the optical fiber 2 is introduced into the cap 40 from the inlet-side opening 41. The optical fiber 2 entered into the cover 40 is guided to the detection space 12 by the first guide roller 20. Light is projected from the light projecting section 13 to the optical fiber 2 traveling in the detection space 12, and the projected light is received by the light receiving section 14, whereby the irregularities on the surface of the optical fiber 2 are optically detected.
Specifically, laser light (an example of projected light) is projected in a band shape from 2 light projection units 13 to the optical fiber 2. Further, 1 light receiving unit 14 is disposed to face 1 light projecting unit 13, respectively, and the light receiving unit 14 receives the laser light passing through the periphery of the optical fiber 2. Therefore, the light receiving unit 14 receives the light quantity, which is reduced by the amount corresponding to the light blocked by the optical fiber core wire 2, among the light projected from the light projecting unit 13.
The determination unit (not shown) continuously reads the data of the light receiving amount received by the light receiving unit 14, calculates an average value of the light receiving amounts accumulated for a predetermined time period immediately before the reading, and calculates a difference from the read value. When the difference exceeds a predetermined value, a signal for detecting unevenness is output.
When the surface of the optical fiber core 2 from which light is projected has no irregularities, the amount of laser light received by the light receiving unit 14 is constant, but if the portion having the irregularities on the surface enters the detection space 12 and light is projected, the amount of light blocked by the optical fiber core 2 changes. This changes the light amount of the laser beam received by the light receiving unit 14, and the presence of the unevenness is detected.
The optical fiber 2 passing through the detection space 12 is guided to the outlet side opening 42 by the second guide roller 30. Thereby, the optical fiber 2 is drawn out of the cover 40 from the outlet side opening 42, and wound on, for example, a winding reel, not shown.
As shown in fig. 6, in the above-described execution of the unevenness detection of the optical fiber 2, the cleaning gas 3 is ejected to the outside of the cover 40 from the wire inlet side opening 41 provided in the side surface 40a of the cover 40. At this time, the flow velocity of the cleaning gas 3 ejected from the wire entrance side opening portion 41 is larger than the linear velocity of the optical fiber core wire 2 drawn and entered from the wire entrance side opening portion 41 in the direction indicated by the arrow B. That is, since the supply amount of the cleaning gas 3 from the supply unit 50 is large, the inside of the cover 40 is pressurized.
The flow velocity of the cleaning gas 3 ejected from the entrance-side opening portion 41 is higher than the linear velocity of the optical fiber core wire 2 entering from the entrance-side opening portion 41. Therefore, as shown by an arrow C in fig. 6, it is possible to suppress the foreign matter 4 such as floating dust from entering the cover 40 from the wire entrance side opening 41 due to the drawing flow of the optical fiber 2.
As described above, according to the irregularity detection device 1 and the irregularity detection method for a linear body according to the present embodiment, the detection space 12 is located in the cover 40 to which the clean gas 3 is supplied, and therefore, entry of foreign matter 4 such as floating dust can be suppressed. Guide rollers (the first guide roller 20 and the second guide roller 30) that guide the optical fiber 2 before and after passing through the detection space 12 are also provided in the hood 40 to which the cleaning gas 3 is supplied. This suppresses the linear vibration of the optical fiber core wire 2 caused by the wind pressure of the supplied cleaning gas 3, and the two guide rollers 20 and 30 can stabilize the movement of the optical fiber core wire 2 in the detection space 12. This can reduce erroneous detection of the unevenness of the optical core wire 2, which is inspected in the detection space 12.
(examples)
In the embodiment, the irregularity detection device 1 for a linear body according to the present embodiment is used to detect irregularities of the optical fiber core 2 by the irregularity detection method for a linear body according to the present embodiment described above.
In the comparative example, the unevenness of the optical fiber core wire 2 was detected using the conventional unevenness detecting apparatus for a linear body. The irregularity detection device for a linear body according to this comparative example corresponds to a structure in which the first guide roller 20 and the second guide roller 30 of the irregularity detection device for a linear body 1 according to the present embodiment are replaced with the conventional guide roller 120 having the circumferential groove 121 shown in fig. 5, the cover 40 is removed, and the detection portion 10 is covered with only the cover.
In the above examples and comparative examples, the amount of linear vibration and the frequency of occurrence of erroneous detection of the optical fiber core wire 2 were measured. In the measurement, the amount of the cleaning gas 3 supplied from the supply unit 50 was set to 0.5m3In terms of a/minute. The entrance-side opening 41 and the exit-side opening 42 are circular openings having a diameter of 10 mm. Thus, the flow velocity of the cleaning gas 3 ejected from the inlet-side opening 41 and the outlet-side opening 42 is 3183 m/min.
The measurement was carried out in the following manner. The optical fiber core wire 2 coated with the colored layer was advanced 1000km by the unevenness detecting device for the linear body of each of the above examples and comparative examples. Then, the optical fiber core wire 2 is cut at the timing when the unevenness of the surface (colored layer) of the optical fiber core wire 2 is detected by the detection section 10, and whether or not the unevenness exists at the position is confirmed by palpation. In this confirmation, the case where there is no irregularity is regarded as erroneous detection, and the number of times of the erroneous detection is counted. Further, the amount of the traveling wire vibration is measured by the detection unit 10.
Comparative examples were measured at 2 linear speeds, respectively, with the linear speed of the optical fiber core wire 2 set to 1000 m/min and 1500 m/min.
In the example, the linear velocity of the optical fiber 2 was measured at 1500 m/min.
In table 1 below, the measurement results when the linear velocity of the optical fiber core wire 2 of the comparative example was 1000 m/min were taken as 1.0 (reference), and the amount of linear vibration and the frequency of occurrence of erroneous detection (the number of erroneous detections when the optical fiber core wire 2 was advanced 1000 km) were shown relative to the reference.
[ TABLE 1 ]
As shown in the results of table 1, the example has a smaller linear vibration amount and a smaller frequency of erroneous detection than the case where the linear speed of the optical fiber core wire 2 is the same as the comparative example. As is clear from the results of the comparative examples shown in table 1, when the linear speed of the optical fiber core wire 2 is increased by the same apparatus, the amount of linear vibration and the frequency of occurrence of erroneous detection become large. In the example, the linear velocity of the optical fiber core wire 2 is lower than that in the example, and the linear vibration amount and the frequency of occurrence of erroneous detection are also reduced.
As described above, the embodiment has a small amount of linear vibration compared to the comparative example, and thus the running of the optical fiber core wire 2 of the detection space 12 is stable. In addition, since the false detection frequency is lower in the example than in the comparative example, the false detection of the unevenness of the optical core wire 2 by the inspection through the detection space 12 can be reduced. In the embodiment, the amount of linear vibration and the frequency of occurrence of erroneous detection are small as compared with the case where the linear speed of the optical fiber core 2 is small, and therefore, the unevenness of the optical fiber core 2 can be inspected at a high speed.
In the above embodiment, the optical fiber core wire coated with the colored layer is used as the linear body, but the present invention is not limited thereto. The linear body of the irregularity detecting device and the irregularity detecting method for a linear body according to the present invention may be a linear body such as a coated optical fiber base wire, an optical fiber ribbon-shaped core wire in which optical fiber core wires are connected by a ribbon-shaped resin, or a coated metal wire. That is, the present invention can also be applied to detection of irregularities of the coating portion and the belt-shaped resin.
While the present invention has been described in detail and with reference to the specific embodiments, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope thereof. The number, position, shape, and the like of the components described above are not limited to those of the above embodiments, and may be changed to those suitable for carrying out the present invention.
Description of the reference numerals
1: concave-convex detection device
2: optical fiber core wire (an example of a linear body)
3: cleaning gas
4: foreign matter
10: detection part
11: detection part main body
12: detection space
13: light projecting part
14: light receiving part
20: first guide roller
30: second guide roller
21. 31: peripheral groove
22. 32: first side surface
23. 33: second side surface
24. 34: bottom surface
40: cover
40a, 40 b: side of the cover
41: wire inlet side opening part
42: opening part on outgoing line side
43: gas supply part
50: supply part
Claims (5)
1. A linear body irregularity detection device includes:
a light projecting section for projecting light to a traveling linear body;
a light receiving unit for receiving the light projected from the light projecting unit;
a first guide roller that guides the travel of the linear body on the upstream side, the linear body passing through a detection space between the light projecting section and the light receiving section;
a second guide roller that guides the downstream-side travel of the linear body passing through the detection space;
a cover for covering the light projecting section, the light receiving section, the first guide roller, and the second guide roller; and
a supply unit for supplying the cleaning gas into the cover,
the cover is provided with an air supply portion communicating with the supply portion, an inlet-side opening portion into which the linear body enters, and an outlet-side opening portion from which the linear body exits.
2. The irregularity detecting device of a linear body according to claim 1,
the first guide roller and the second guide roller each have a V-shaped peripheral groove,
the peripheral groove is provided with a first side surface and a second side surface which form a V shape,
the first side surface and the second side surface are formed to be in contact with the linear body traveling.
3. A method for detecting unevenness of a linear body,
the cover covers the light projecting part, the light receiving part, the detection space, the first guide roller and the second guide roller, the detection space optically detects the concave-convex of the surface of the linear body through the light projecting part and the light receiving part,
a cleaning gas is supplied into the enclosure,
the linear body is made to enter the cover from a wire inlet side opening part provided in the cover,
the linear body entered into the cover is guided to the detection space by the first guide roller,
projecting light from the light projecting unit onto the linear body traveling in the detection space, receiving the projected light by the light receiving unit, and optically detecting irregularities on the surface of the linear body,
the linear body having passed through the detection space is guided by the second guide roller to a side outlet opening provided in the cover.
4. The method for detecting unevenness of a linear body according to claim 3,
the cleaning gas is ejected from the inlet-side opening to the outside of the cover.
5. The method for detecting unevenness of a linear body according to claim 4,
the flow velocity of the cleaning gas ejected from the wire inlet side opening portion is larger than the linear velocity of the linear body entering from the wire inlet side opening portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-121339 | 2020-07-15 | ||
| JP2020121339A JP2022018310A (en) | 2020-07-15 | 2020-07-15 | Unevenness detection device and unevenness detection method for linear body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113945576A true CN113945576A (en) | 2022-01-18 |
Family
ID=79327448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110800971.4A Pending CN113945576A (en) | 2020-07-15 | 2021-07-15 | Device and method for detecting unevenness of linear body |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022018310A (en) |
| CN (1) | CN113945576A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202243583A (en) | 2021-02-09 | 2022-11-01 | 日商保德科技股份有限公司 | Magnetic composite |
-
2020
- 2020-07-15 JP JP2020121339A patent/JP2022018310A/en active Pending
-
2021
- 2021-07-15 CN CN202110800971.4A patent/CN113945576A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2022018310A (en) | 2022-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113945576A (en) | Device and method for detecting unevenness of linear body | |
| US9588056B2 (en) | Method for particle detection on flexible substrates | |
| US6309567B1 (en) | Collectively coating die device for manufacturing separable optical fiber ribbon and manufacturing method thereof | |
| JP2012042354A (en) | Inspection apparatus for optical fiber tape core, manufacturing apparatus, and inspection method for optical fiber tape core | |
| JP2016531291A (en) | Apparatus and method for detecting defects in strip material | |
| CN104860114A (en) | Yarn Coiling Device | |
| KR100367546B1 (en) | Manufacturing method of optical fiber tape core wire | |
| WO1995021800A1 (en) | Covered optical fiber and process for producing the same | |
| JP2004012414A (en) | Method and apparatus for detecting unevenness of wire-shaped article | |
| EP3947793B1 (en) | Method of contactless optical detection of yarn at a workstation of a yarn manufacturing textile machine, an optical sensor of yarn and a textile machine | |
| US10921213B2 (en) | Screening apparatus for optical fiber | |
| KR20180102160A (en) | Liquid removal device and liquid removal method | |
| US5880825A (en) | Method and apparatus for detecting defects in an optical fiber | |
| JP2877079B2 (en) | Package quality monitoring device | |
| JP3248445B2 (en) | Surface abnormality detection method and surface condition measuring device for multi-core optical fiber | |
| US5953445A (en) | Light guiding member, light detecting device and defect inspecting apparatus | |
| CN113767056B (en) | Apparatus and method for detecting whip tail during fiber winding | |
| JP5904195B2 (en) | Inspection device and inspection method for optical fiber ribbon | |
| CN107082315A (en) | Yarn monitoring device | |
| JP4760254B2 (en) | Linear body appearance detection method and appearance detection apparatus | |
| JPH09145304A (en) | Inspection method for tube or tube cable | |
| JP2023091254A (en) | Filament-unevenness detection apparatus | |
| KR940008676B1 (en) | Optical fiber guide | |
| JPH0455756A (en) | Ultrasonic flaw detecting apparatus for wire rod | |
| JPH11244930A (en) | Deposition removing device and its method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |