WO2015052941A1 - 被覆厚さ検査方法及び被覆厚さ検査装置 - Google Patents
被覆厚さ検査方法及び被覆厚さ検査装置 Download PDFInfo
- Publication number
- WO2015052941A1 WO2015052941A1 PCT/JP2014/005189 JP2014005189W WO2015052941A1 WO 2015052941 A1 WO2015052941 A1 WO 2015052941A1 JP 2014005189 W JP2014005189 W JP 2014005189W WO 2015052941 A1 WO2015052941 A1 WO 2015052941A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thickness
- electric wire
- rectangular
- coating thickness
- inspection method
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0691—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of objects while moving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Definitions
- the present invention mainly relates to a method for inspecting the thickness of a covering portion of a rectangular electric wire in the longitudinal direction and the circumferential direction.
- a flat electric wire is an electric wire in which a covering portion is formed around a rectangular conductor having a rectangular cross section. Since the rectangular electric wire has a higher space factor than an electric wire having a circular cross section, it is possible to reduce the size or output of the device.
- Patent Documents 1 and 2 disclose techniques related to flat electric wires.
- Patent Document 1 discloses a method of manufacturing a flat electric wire. Specifically, a method is disclosed in which a rectangular conductor is passed through a tank filled with an insulating varnish, and then the insulating varnish is cured by heating to form a covering portion. Further, Patent Document 1 discloses a method in which an insulating varnish is sprayed and then heated to cure the insulating varnish to form a covering portion.
- Patent Document 2 discloses a method of forming a uniform covering portion in order to improve the space factor.
- the coating die that forms the covering portion includes four die parts arranged so as to face the four sides of the flat conductor. Each die part is formed from a groove formed in the die part. Apply an insulating varnish to the flat conductor.
- each die part has a small groove formed on the opposite side of a corner area (area where a dog bone is formed) of a flat conductor. With this configuration, it is possible to prevent the insulating varnish from being excessively applied to the corner region of the flat conductor and form a uniform covering portion.
- the thickness of the covering portion of the rectangular electric wire for example, the method of measuring the thickness of the covering portion by cutting the end portion of the flat electric wire, or the method of measuring the thickness of the covering portion at one point of the flat conductor over the longitudinal direction by a film thickness meter or the like was done.
- the former measurement is a measurement of only a part of the flat wire in the longitudinal direction
- the latter measurement is a measurement of only a portion of the flat wire in the circumferential direction. That is, the conventional measurement is only partial, and the quality of the flat electric wire cannot be reliably guaranteed.
- the present invention has been made in view of the above circumstances, and a main object thereof is to provide a method for inspecting the thickness of a covering portion in the longitudinal direction and the circumferential direction of a flat electric wire.
- this coating thickness inspection method includes an outer shape measurement step, a position calculation step, and a determination step.
- the outer shape measuring step the outer shape of the rectangular electric wire is obtained over the longitudinal direction of the flat electric wire.
- the position calculating step the position of the rectangular conductor in the rectangular electric wire is obtained over the longitudinal direction of the rectangular electric wire.
- the determination step whether or not the thickness over the circumferential direction of the covering portion calculated based on the results obtained in the outer shape measurement step and the position calculation step satisfies the reference thickness over the longitudinal direction. judge.
- the coating thickness inspection method it is preferable to do the following. That is, it includes a thickness measuring step of measuring the thickness of the covering portion at least one point on each of the four sides of the rectangular electric wire when the rectangular conductor is viewed in the longitudinal direction. In the position calculating step, the result measured in the thickness measuring step is used.
- the position of the rectangular conductor can be accurately obtained by using a film thickness meter or the like capable of measuring the thickness of the covering portion at a predetermined point.
- the thickness of the covering portion is measured at a position avoiding the bulge portions formed at the four corners of the covering portion of the flat electric wire.
- the thickness measuring step it is preferable to measure at least two points of the covering portion on one side of the four sides of the rectangular electric wire.
- the flat conductor is inclined with respect to the flat electric wire, the inclination can be detected. Accordingly, since the position of the flat conductor can be measured more accurately, it can be more accurately determined whether or not the thickness of the covering portion satisfies the reference thickness.
- the thickness measurement step it is preferable to measure the thickness of the coating portion by irradiating the flat wire with a laser in a dot shape.
- the thickness of the covering portion at a predetermined point can be measured quickly and accurately to obtain the position of the flat conductor.
- the thickness of the covering portion is measured by a thickness measuring portion while moving the rectangular electric wire along the longitudinal direction.
- the thickness of the covering portion can be measured over the longitudinal direction of the flat electric wire without moving the measuring portion.
- At least one of the thickness measurement units is preferably different in position in the longitudinal direction from any other thickness measurement unit.
- At least one of the thickness measurement units has a laser irradiation timing different from any of the other thickness measurement units.
- the laser irradiated by the thickness measuring unit on the long side of the flat electric wire when viewed in the longitudinal direction has a laser irradiation direction parallel to each other, and the flat electric wire
- the laser irradiation directions are parallel to each other, and the laser irradiated on the long side and the laser irradiated on the short side are preferably perpendicular to each other.
- the thickness of the covering portion of the round electric wire When inspecting the thickness of the covering portion of the round electric wire, it does not matter from which direction the laser is irradiated as long as the laser is irradiated toward the center. In this regard, when inspecting a rectangular electric wire, the thickness of the covering portion cannot be accurately determined depending on the direction of laser irradiation. Therefore, the thickness of the covering portion can be accurately measured by irradiating the laser as described above.
- the outer shape measuring unit irradiates the four sides of the rectangular electric wire in a linear manner while moving the flat electric wire along the longitudinal direction. It is preferable to measure the outer shape of the flat electric wire.
- At least one of the outer shape measurement units has a position in the longitudinal direction different from any of the other outer shape measurement units.
- At least one of the outer shape measurement units has a laser irradiation timing different from that of any other outer shape measurement unit.
- the laser irradiated by the outer shape measuring unit on the long side of the rectangular electric wire when viewed in the longitudinal direction is such that the laser irradiation directions are parallel to each other.
- the laser irradiated by the outer shape measuring unit on the short side is preferably parallel to the laser irradiation direction, and the laser irradiated on the long side and the laser irradiated on the short side are preferably perpendicular to each other.
- the shape of each surface can be accurately obtained by irradiating the laser perpendicularly to each surface as described above. Therefore, the thickness of the covering portion in the longitudinal direction and the circumferential direction can be accurately measured.
- At least one of the four sets of the thickness measuring unit and the outer shape measuring unit that measure the same side of the rectangular electric wire is the thickness measuring unit and the outer shape measuring unit. It is preferable that the parts are fixed so that they cannot move relative to each other.
- the positional relationship between the thickness measuring unit and the outer shape measuring unit can be fixed, so that an error when the detection results of the two are superimposed can be reduced, and the thickness of the covering unit can be accurately measured.
- the outer shape measurement step, the position calculation step, and the determination step are performed in a series of steps with the flat wire manufacturing process.
- the coating thickness inspection apparatus includes an outer shape measurement unit, a position calculation unit, and a determination unit.
- the outer shape measuring unit measures the outer shape of the rectangular electric wire along the longitudinal direction of the rectangular electric wire.
- the said position calculation part calculates
- the determination unit has a thickness over the circumferential direction of the covering portion calculated based on a result obtained by the outer shape measurement unit and the position calculation unit, and a dimension of the rectangular conductor, over the longitudinal direction. It is determined whether or not the reference thickness is satisfied.
- FIG. 1 is a side view schematically illustrating a flat wire manufacturing apparatus and a coating thickness inspection apparatus according to an embodiment of the present invention.
- the figure which shows the laser which the cross-sectional shape of a flat electric wire, and a film thickness meter and a displacement meter irradiate.
- the figure explaining the process which calculates the thickness of a coating
- the flat electric wire manufacturing apparatus 10 is an apparatus that manufactures the flat electric wire 30 from the flat conductor 31, and includes a transport roller 11 and a covering molding unit 12.
- the rectangular conductor 31 is an elongated conductor having a rectangular cross section as shown in FIG.
- the rectangular conductor 31 of the present embodiment is made of copper, but other materials can be used as long as it is a conductor.
- the “rectangular shape” includes not only a rectangular shape but also a square shape, and also includes a shape in which four corners are arc shapes.
- the conveyance roller 11 is composed of two columnar members arranged to face each other.
- the transport roller 11 can transport the flat conductor 31 in the direction indicated by the thick line in FIG. 1 by rotating with the flat conductor 31 interposed therebetween.
- FIG. 1 only one pair of transport rollers 11 is shown, but in reality, a large number of transport rollers 11 are arranged.
- the covering molding portion 12 forms a covering portion 32 around the flat conductor 31.
- the covering molding part 12 includes a die 13 and a screw cylinder 14.
- the die 13 is formed with a through portion through which the flat conductor 31 is inserted. Further, the die 13 applies the resin supplied from the screw cylinder 14 around the flat conductor 31.
- the rectangular wire 30 can be manufactured by forming the covering portion 32 around the rectangular conductor 31.
- coated part 32 of this embodiment is comprised from PPS (polyphenylene sulfide), other resin, such as PEEK (polyether ether ketone), can also be used.
- the covering portion 32 formed in this way may be formed with a bulge portion 32a called a dog bone as shown in FIG.
- the coating thickness inspection apparatus 20 will be described mainly with reference to FIG.
- the vertical and horizontal directions are defined as shown in FIG.
- the covering thickness inspection device 20 inspects whether or not the thickness of the covering portion 32 satisfies the reference thickness for the flat wire 30 manufactured by the flat wire manufacturing apparatus 10 through a series of flows.
- the reference thickness is a thickness that can ensure insulation of the rectangular electric wire 30.
- the coating thickness inspection apparatus 20 includes a conveyance roller 21, a film thickness meter 22, a displacement meter 25, and a calculation unit 28.
- the transport roller 21 is composed of two columnar members arranged to face each other, like the transport roller 11.
- the conveyance roller 21 can convey the flat electric wire 30 in a direction indicated by a thick line in FIG. 1 by sandwiching and rotating the flat electric wire 30.
- FIG. 1 only one pair of transport rollers 21 is shown, but in actuality, many transport rollers 21 are arranged.
- the film thickness meter 22 is a device that measures the film thickness (the thickness of the covering portion 32 in the present embodiment) by irradiating light with an optical device in a dot shape and analyzing the reflected light.
- the film thickness meter 22 includes a plurality of film thickness detection units (thickness measurement units) 23 and a film thickness processing unit 24.
- a laser device is used as an optical instrument, and thereby the film thickness can be measured quickly and accurately.
- the film thickness meter 22 includes five film thickness detectors 23.
- the five film thickness detectors 23 have the same configuration.
- the film thickness detection unit 23 is an elongated member, and an irradiation unit capable of irradiating a laser in a dot shape and a light receiving unit capable of receiving a reflected wave are arranged on one end side surface.
- the film thickness detection unit 23 of the present embodiment is arranged on each of the four sides (four sides) of the rectangular electric wire 30 having a rectangular cross section so that the irradiation unit and the light receiving unit face each surface of the flat electric wire 30. , Another one is arranged on one side (specifically, the upper side) of the four sides.
- the thickness of the covering portion 32 can be detected with high accuracy (details will be described later). Further, in the lower side, the left side, and the right side for measuring one point per side, the laser is irradiated to the approximate center of each side.
- the laser irradiation position of the film thickness detection unit 23 is not limited to the substantially center, but the inner flat rectangular conductor 31 is a straight part of the covering unit 32 and is a bulge shown in FIG. It is preferable that the position avoids the portion 32a. Specifically, in consideration of the size of the general flat electric wire 30 and the bulging portion 32a, the length of each side from the center of one side of the flat electric wire 30 to one side and the other side is within 35% (more preferably within 30%). It is preferable to measure the position.
- the long side (including the bulging portion 32a) in the cross section perpendicular to the longitudinal direction of the flat electric wire 30 is 4 mm, it is preferable to measure in the central 2.8 mm or 2.4 mm region.
- the upper side of the rectangular electric wire 30 is measured at two points, and each measurement point needs to be separated to some extent. Therefore, it is preferable to determine the measurement point in consideration of the above-described range. Thereby, the thickness of the covering portion 32 can be detected with higher accuracy.
- the measurement may be performed at a position of 1.2 mm from the center of one side of the flat wire 30 to one side and the other side.
- each of the five film thickness detectors 23 is configured to irradiate a laser perpendicularly to the surface of the flat wire 30. Therefore, as shown in FIG. 3, when viewed in the longitudinal direction of the flat electric wire 30, the lasers irradiated by the film thickness detectors 23 arranged above and below are parallel to each other. Further, the laser beams emitted by the film thickness detectors 23 arranged on the left and right are parallel to each other. Furthermore, the laser irradiated by the film thickness detectors 23 disposed above and below and the laser irradiated by the film thickness detectors 23 disposed on the left and right are perpendicular to each other.
- the plurality of film thickness detectors 23 arranged in parallel or perpendicular to each other are based on a relative positional relationship with respect to a certain surface as a reference surface so as to face the outer peripheral surface of the transported rectangular electric wire. The position is set. How to provide this reference plane is arbitrary, but for example, a sample having the same size as the rectangular electric wire 30 is set on a member that supports or conveys the rectangular electric wire 30 (conveying roller 21, unillustrated conveying roller, etc.) The surface of this sample may be used as the reference plane.
- the position of the film thickness detection unit 23 relative to the flat electric wire 30 and the film thickness detection unit are determined by setting the position of the film thickness detection unit 23 with the surface corresponding to the surface of the conveyed flat electric wire 30 as a reference plane.
- the accuracy of the positional relationship between the 23 can be improved.
- the film thickness detection unit 23 irradiates a laser beam to the conveyed rectangular wire 30 in a dot shape, receives a reflected wave of the irradiated laser and converts it into an electric signal, and the electric signal is sent to the film thickness processing unit 24. Output.
- the reflected wave includes a reflected wave reflected from the surface of the rectangular electric wire 30 (the covering portion 32) and a reflected wave reflected from the surface of the rectangular conductor 31.
- the film thickness processing unit 24 calculates the distance to the two reflection positions by analyzing the reflected wave. Based on the difference in distance, the film thickness processing unit 24 can determine the thickness of the covering unit 32.
- coated part 32 obtained here is each thickness of 5 points
- the film thickness detection unit 23 performs laser irradiation and light reception at a predetermined sampling period. Thereby, the film thickness meter 22 measures the thickness of the five points of the covering portion 32 in a non-destructive manner over the entire length of the flat wire 30 in the longitudinal direction (strictly speaking, excluding a portion between sampling cycles, the same applies hereinafter). be able to. In addition, the utilization method of the thickness of the coating
- the displacement meter 25 is a device that measures the shape of the outer shape of the object (in this embodiment, the outer shape of the rectangular electric wire 30) by irradiating a laser beam linearly and analyzing the reflected wave (diffuse reflected light).
- the displacement meter 25 includes a displacement detection unit (outer shape measurement unit) 26 and a displacement processing unit 27.
- the displacement meter 25 includes four displacement detectors 26.
- One displacement detector 26 is disposed on each of the four sides (four sides) of the flat electric wire 30.
- an irradiation unit capable of linearly irradiating a laser and a light receiving unit capable of receiving a reflected wave are arranged.
- those installed above and below the rectangular electric wire 30 are configured such that the lens has a laser spot diameter larger than the length of the side of the rectangular electric wire 30 in the left-right direction.
- those installed on the left and right sides of the rectangular electric wire 30 make the laser spot diameter larger than the length of the side in the thickness direction (vertical direction) of the rectangular electric wire 30 by the lens. ing.
- Each displacement detector 26 has the same configuration except for the laser spot diameter. Further, instead of the configuration in which different spot diameters are set in the vertical direction and the horizontal direction as in this embodiment, measurement is performed by setting the longer spot diameter in the vertical direction and the horizontal direction to four lasers. Also good.
- each of the four displacement detectors 26 is configured to irradiate a laser perpendicularly to the surface of the flat electric wire 30. Therefore, as shown in FIG. 3, when viewed in the longitudinal direction of the flat electric wire 30, the lasers emitted by the displacement detectors 26 arranged above and below are parallel to each other. Further, the laser beams emitted by the displacement detectors 26 arranged on the left and right are parallel to each other. Further, the laser emitted from the displacement detectors 26 arranged above and below and the laser emitted from the displacement detectors arranged right and left are perpendicular to each other. More specifically, the position of the displacement detector 26 is set based on a relative position relationship with respect to a certain surface as a reference surface. In addition, this reference plane can be determined using the sample of the flat electric wire 30 etc. as mentioned above.
- the displacement detection unit 26 linearly irradiates a laser beam to the conveyed rectangular electric wire 30, receives a reflected wave of the irradiated laser, converts it into an electrical signal, and outputs the electrical signal to the displacement processing unit 27. .
- the displacement detection unit 26 linearly irradiates a laser beam to the conveyed rectangular electric wire 30, receives a reflected wave of the irradiated laser, converts it into an electrical signal, and outputs the electrical signal to the displacement processing unit 27.
- the reflected wave of the laser applied to the part is received earlier than the others.
- the displacement processing unit 27 calculates the outer shape of each of the four sides of the rectangular electric wire 30 based on the time from when the laser is irradiated until the reflected wave is received. Thereby, the external shape around the flat electric wire 30 can be measured.
- the displacement detector 26 performs laser irradiation and light reception at a predetermined sampling period. Thereby, the displacement meter 25 can measure the external shape around the flat electric wire 30 in a non-destructive manner over the entire length of the flat electric wire 30.
- the detection result of the displacement meter 25 is output to the calculation unit 28.
- the calculation unit 28 is an information processing device and performs calculations based on the measurement results of the film thickness meter 22 and the displacement meter 25.
- the calculating part 28 performs the following processes. That is, the calculation unit 28 determines that the portion that has passed through the film thickness detection unit 23 passes through the displacement detection unit 26 based on the conveyance speed of the flat wire 30 and the distance from the film thickness detection unit 23 to the displacement detection unit 26. Find the time it takes to do.
- the calculation unit 28 can use the measurement result of the film thickness meter 22 and the measurement result of the displacement meter 25 at the same location by considering this time.
- the calculation unit 28 includes a position calculation unit 28a and a determination unit 28b.
- the position calculation unit 28a calculates the position of the flat conductor 31.
- the solid line in the graph of FIG. 4 shows the outer shape of the rectangular electric wire 30 detected by the displacement detection unit 26 arranged on the upper side of the rectangular electric wire 30.
- the thickness of the covering part 32 at the measurement point is measured from the film thickness detection part 23 arranged on the upper side of the flat electric wire 30. Therefore, it can be seen from the outer shape of the rectangular electric wire 30 that the rectangular conductor 31 is positioned downward by the measured thickness of the covering portion 32.
- the position of the rectangular conductor 31 can be obtained.
- the thickness of the covering portion 32 at the approximate center of each side is measured.
- FIG. Fig.5 (a) shows sectional drawing of the flat electric wire 30 when the thickness deviation has not arisen.
- FIG. 5B shows a cross-sectional view of the rectangular electric wire 30 when uneven thickness occurs in the left-right direction.
- the uneven thickness in the left-right direction can be detected by the film thickness detectors 23 arranged on the left and right.
- FIG.5 (c) shows sectional drawing of the rectangular electric wire 30 when thickness deviation has arisen in the up-down direction.
- the thickness deviation in the vertical direction can be detected by the film thickness detection unit 23 arranged vertically.
- FIG. 5 (d) shows a cross-sectional view of the rectangular electric wire 30 when uneven thickness occurs in the rotation direction.
- the uneven thickness in the rotation direction can be detected in consideration of the measurement results of the two film thickness detectors 23 arranged on the upper side.
- the rectangular conductor 31 is rectangular, it is preferable to detect the thickness of two points on the long side.
- the determination unit 28b Based on the outer shape of the flat wire 30 measured by the displacement meter 25, the position of the flat conductor 31 calculated by the position calculator 28a, and the dimensions of the flat conductor 31, the determination unit 28b The thickness of the covering portion 32 over the entire circumference in the circumferential direction is calculated, and it is determined whether or not the reference thickness is satisfied. This will be specifically described below.
- the determination part 28b can obtain
- the determination unit 28 b can calculate the covering portion 32 over the entire circumference in the circumferential direction of the rectangular electric wire 30 by performing the same processing for the other three sides of the rectangular electric wire 30. Further, since the film thickness meter 22 and the displacement meter 25 measure over the entire length of the flat wire 30 in the longitudinal direction, the determination unit 28b calculates the entire length of the flat wire 30 and the thickness of the covering portion 32 over the entire circumference. it can.
- the four sides of the rectangular conductor 31 can also be regarded as being at right angles to each other, by connecting the positions (5 points) of the rectangular conductor 31 detected by the five film thickness meters so that the four sides are at right angles, The thickness of the covering portion 32 over the entire length and the entire circumference can be calculated without using the dimensions of the flat conductor 31.
- the thickness of the covering part 32 over the entire length and the entire circumference is the size of the flat conductor 31. It is affected by accuracy. Accordingly, in this case, the dimension of the outer shape of the rectangular conductor 31 is measured, and feedback is applied to the processing of the rectangular conductor 31 to improve the accuracy of the outer dimension of the rectangular conductor 31, and the covering portion covering the entire length and the entire circumference.
- the thickness of 32 can be obtained with high accuracy.
- the determination part 28b determines whether the thickness of the coating
- the coating thickness inspection apparatus 20 can inspect the thickness of the coating portion 32 over the entire length and the entire circumference with the above configuration.
- the five film thickness detectors 23 are all at the same position in the longitudinal direction of the flat wire 30.
- the film thickness detection unit 23 that measures the left and right and the film thickness detection unit 23 that measures the top and bottom are different in the longitudinal direction of the flat wire 30. In this way, by changing the position of the flat wire 30 in the longitudinal direction, the scattered light, leakage light, reflected light, etc. of the laser irradiated by a certain film thickness detector 23 are received by the light receivers of the other film thickness detectors 23. The possibility of reaching the can be reduced.
- the two film thickness detectors 23 that detect right and left have the same position in the longitudinal direction of the flat wire 30, but it is possible for the other to receive one laser by varying the timing of laser irradiation. Is reduced. The same applies to the film thickness detectors 23 arranged above and below.
- the displacement detection unit 26 for measuring left and right and the film thickness detection unit 23 for measuring vertical are different in the position in the longitudinal direction of the flat wire 30.
- the two displacement detection units 26 arranged on the left and right have different timings of laser irradiation, and the two displacement detection units 26 arranged on the upper and lower sides are also lasers. The timing of irradiation is different.
- the layout of this modification is an example, and about the film thickness detection part 23 arrange
- the attachment member 40 includes a first attachment portion 41 and a second attachment portion 42.
- the first attachment portion 41 and the second attachment portion 42 are the same member or separate members fixed so as not to move relative to each other.
- the displacement detector 26 is attached to the first attachment part 41.
- An attachment hole is formed in the second attachment portion 42, and the film thickness detection portion 23 is attached to the second attachment portion 42 by inserting the film thickness detection portion 23 into the attachment hole and then tightening with a bolt or the like. It is done.
- the mounting member 40 disposed on the upper side includes one first mounting portion 41 and two second mounting portions 42, and the mounting member 40 disposed on the lower side, the left side, and the right side includes One first mounting portion 41 and one second mounting portion 42 are provided.
- the detection result of the film thickness detection unit 23 and the detection result of the displacement detection unit 26 are overlapped (handled with the same coordinates). By fixing the detection unit 26 so that the relative movement is not possible, it is possible to reduce a deviation when the detection results of both are superimposed.
- the film thickness detection unit 23 and the displacement detection unit 26 that measure any one of the four surfaces of the flat electric wire 30 are fixed at least by the attachment member 40 and the like so as not to be relatively movable. As shown in FIG. 6, it is more preferable that all sets of film thickness detectors 23 and displacement detectors 26 are fixed so as not to move relative to each other.
- the coating thickness inspection apparatus 20 includes the displacement meter 25, the external shape of the rectangular electric wire 30 (covering portion 32) can be measured by superimposing the measurement results of the four displacement detection units 26. it can.
- the bulging part 32a is formed in the flat electric wire 30, in order to measure the external shape of the flat electric wire 30 in detail, it is preferable that it is the structure which added the displacement detection part 26 further.
- the rectangular electric wire including the shape of the bulging portion 32a is irradiated by irradiating the laser with an angle ⁇ with the four sides of the rectangular electric wire 30.
- the angle ⁇ is preferably 45 degrees.
- the coating thickness inspection apparatus 20 includes the displacement meter 25, the position calculation unit 28a, and the determination unit 28b.
- the displacement meter 25 measures the outer shape of the flat electric wire 30 over the longitudinal direction of the flat electric wire 30 (outer shape measuring step).
- the position calculation unit 28a obtains the position of the rectangular conductor 31 in the rectangular electric wire 30 over the longitudinal direction of the rectangular electric wire 30 (position calculating step).
- the determination unit 28b is configured such that the thickness of the covering portion 32 calculated based on the results obtained by the displacement meter 25 and the position calculation unit 28a and the dimensions of the flat conductor 31 is the longitudinal direction of the flat electric wire 30. It is determined whether or not the reference thickness is satisfied (determination step).
- the coating thickness inspection apparatus 20 of this embodiment includes a film thickness meter 22.
- the film thickness meter 22 measures the thickness of the covering portion 32 at least one point on each of the four sides of the rectangular electric wire 30 (film thickness calculating step).
- the position calculation unit 28 a uses the thickness of the covering unit 32 measured by the film thickness meter 22.
- the position of the flat conductor 31 can be accurately obtained by using the film thickness meter 22 capable of measuring the thickness of the covering portion 32 at the measurement point.
- the thickness of the covering portion 32 may be measured by another type of measuring device using an optical device (for example, a laser device). Moreover, you may measure the thickness of the coating
- the thickness of the covering portion 32 is measured by the film thickness meter 22 to determine the position of the flat conductor 31, but other methods (for example, light that does not pass through the covering portion 32 and penetrate the flat conductor 31).
- the position of the flat conductor 31 may be obtained directly by an irradiation method or the like.
- the reference thickness is satisfied after obtaining the specific thickness of the covering portion 32 over the entire length and the entire circumference, but without determining the specific thickness of the covering portion 32. Only whether or not the reference thickness is satisfied may be obtained.
- the uniform reference thickness is determined for the four sides of the flat electric wire 30, but different reference thicknesses may be set for the four sides of the flat electric wire 30. Further, the reference thickness may determine an upper limit value, a lower limit value, or both of the thickness of the covering portion 32. For example, when it is desired to prevent the covering portion 32 from becoming too thick to reduce the space factor, it is preferable to set the reference thickness as the lower limit value.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
Description
20 被覆厚さ検査装置
21 搬送ローラ
22 膜厚計
23 膜厚検出部(厚さ計測部)
24 膜厚処理部
25 変位計
26 変位検出部(外形計測部)
27 変位処理部
28 演算部
28a 位置算出部
28b 判定部
30 平角電線
31 平角導体
32 被覆部
Claims (16)
- 細長状で断面が矩形状の平角導体と、当該平角導体を覆う被覆部と、からなる平角電線の検査方法において、
前記平角電線の長手方向にわたって、当該平角電線の外形を計測する外形計測工程と、
前記平角電線の前記長手方向にわたって、前記平角電線内の前記平角導体の位置を求める位置算出工程と、
前記外形計測工程及び前記位置算出工程で得られた結果に基づいて算出される前記被覆部の周方向にわたる厚さが、前記長手方向にわたって、基準厚さを満たすか否かを判定する判定工程と、
を含むことを特徴とする被覆厚さ検査方法。 - 請求項1に記載の被覆厚さ検査方法であって、
前記平角電線を前記長手方向で見たときの当該平角電線の四辺について少なくとも1点ずつ前記被覆部の厚さを計測する厚さ計測工程を含み、
前記位置算出工程では、前記厚さ計測工程で計測した結果を利用することを特徴とする被覆厚さ検査方法。 - 請求項2に記載の被覆厚さ検査方法であって、
前記厚さ計測工程では、前記平角電線の前記被覆部の四隅に形成される膨らみ部を避けた位置で前記被覆部の厚さを計測することを特徴とする被覆厚さ検査方法。 - 請求項2に記載の被覆厚さ検査方法であって、
前記厚さ計測工程では、前記平角電線の四辺のうち一辺について前記被覆部の厚さを少なくとも2点計測することを特徴とする被覆厚さ検査方法。 - 請求項2に記載の被覆厚さ検査方法であって、
前記厚さ計測工程では、前記平角電線にレーザを点状に照射して前記被覆部の厚さを計測することを特徴とする被覆厚さ検査方法。 - 請求項2に記載の被覆厚さ検査方法であって、
前記厚さ計測工程では、前記平角電線を前記長手方向に沿って移動させながら厚さ計測部により前記被覆部の厚さの計測を行うことを特徴とする被覆厚さ検査方法。 - 請求項6に記載の被覆厚さ検査方法であって、
前記厚さ計測部のうち少なくとも1つは、前記長手方向における位置が、他の何れかの前記厚さ計測部とは異なることを特徴とする被覆厚さ検査方法。 - 請求項6に記載の被覆厚さ検査方法であって、
前記厚さ計測部のうち少なくとも1つは、レーザを照射するタイミングが、他の何れかの前記厚さ計測部とは異なることを特徴とする被覆厚さ検査方法。 - 請求項8に記載の被覆厚さ検査方法であって、
前記長手方向で見たときに、前記平角電線の長辺に前記厚さ計測部が照射するレーザは、レーザの照射方向が互いに平行であり、前記平角電線の短辺に前記厚さ計測部が照射するレーザは、レーザの照射方向が互いに平行であり、長辺に照射されるレーザと、短辺に照射されるレーザは、互いに垂直であることを特徴とする被覆厚さ検査方法。 - 請求項2に記載の被覆厚さ検査方法であって、
前記外形計測工程では、前記平角電線を前記長手方向に沿って移動させながら、外形計測部が前記平角電線の四辺にそれぞれレーザを線状に照射することで前記平角電線の外形を計測することを特徴とする被覆厚さ検査方法。 - 請求項10に記載の被覆厚さ検査方法であって、
前記外形計測部のうち少なくとも1つは、前記長手方向における位置が、他の何れかの前記外形計測部とは異なることを特徴とする被覆厚さ検査方法。 - 請求項10に記載の被覆厚さ検査方法であって、
前記外形計測部のうち少なくとも1つは、レーザを照射するタイミングが、他の何れかの前記外形計測部とは異なることを特徴とする被覆厚さ検査方法。 - 請求項10に記載の被覆厚さ検査方法であって、
前記長手方向で見たときに、前記平角電線の長辺に前記外形計測部が照射するレーザは、レーザの照射方向が互いに平行であり、前記平角電線の短辺に前記外形計測部が照射するレーザは、レーザの照射方向が互いに平行であり、長辺に照射されるレーザと、短辺に照射されるレーザは、互いに垂直であることを特徴とする被覆厚さ検査方法。 - 請求項11に記載の被覆厚さ検査方法であって、
前記平角電線の同じ辺を計測対象とする4組の前記厚さ計測部及び前記外形計測部のうち少なくとも1組は、前記厚さ計測部及び前記外形計測部が相対移動できないように固定されていることを特徴とする被覆厚さ検査方法。 - 請求項1に記載の被覆厚さ検査方法であって、
前記外形計測工程、前記位置算出工程、及び前記判定工程は、前記平角電線の製造工程と一連の流れで行われることを特徴とする被覆厚さ検査方法。 - 細長状で断面が矩形状の平角導体と、当該平角導体を覆う被覆部と、からなる平角電線の被覆部の厚さを検査する被覆厚さ検査装置において、
前記平角電線の長手方向にわたって、当該平角電線の外形を計測する外形計測部と、
前記平角電線の前記長手方向にわたって、前記平角電線内の前記平角導体の位置を求める位置算出部と、
前記外形計測部及び前記位置算出部で得られた結果と、前記平角導体の寸法と、に基づいて算出される前記被覆部の周方向にわたる厚さが、前記長手方向にわたって、基準厚さを満たすか否かを判定する判定部と、
を備えることを特徴とする被覆厚さ検査装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015541445A JP6429787B2 (ja) | 2013-10-11 | 2014-10-10 | 被覆厚さ検査方法及び被覆厚さ検査装置 |
CN201480055320.5A CN105612402B (zh) | 2013-10-11 | 2014-10-10 | 被覆厚度检查方法和被覆厚度检查装置 |
US15/028,377 US10001366B2 (en) | 2013-10-11 | 2014-10-10 | Coating thickness inspection method and coating thickness inspection device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-213853 | 2013-10-11 | ||
JP2013213853 | 2013-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015052941A1 true WO2015052941A1 (ja) | 2015-04-16 |
Family
ID=52812768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/005189 WO2015052941A1 (ja) | 2013-10-11 | 2014-10-10 | 被覆厚さ検査方法及び被覆厚さ検査装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10001366B2 (ja) |
JP (1) | JP6429787B2 (ja) |
CN (1) | CN105612402B (ja) |
WO (1) | WO2015052941A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018168452A1 (ja) * | 2017-03-17 | 2018-09-20 | 住友電気工業株式会社 | 絶縁電線の製造方法 |
JP2018147803A (ja) * | 2017-03-08 | 2018-09-20 | 住友電気工業株式会社 | ケーブルの製造方法、ケーブルの検査方法およびケーブル外観検査装置 |
JP2020079725A (ja) * | 2018-11-12 | 2020-05-28 | 住友重機械工業株式会社 | 配管の肉厚推定方法及び配管の肉厚推定装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017183211A1 (ja) * | 2016-04-22 | 2017-10-26 | 株式会社ニコン | 画像測定方法、画像測定プログラム及び画像測定装置、並びに物品の製造方法 |
CN108050972B (zh) * | 2017-12-30 | 2024-02-27 | 苏州宇邦新型材料股份有限公司 | 一种圆丝焊带涂层厚度测量装置及测量方法 |
FI129412B (en) | 2018-04-13 | 2022-01-31 | Maillefer Sa | Arrangement and procedure for detecting faults in a cable surface |
US10393510B1 (en) | 2018-11-28 | 2019-08-27 | Innovatech, Llc | Measuring apparatus and method for measuring flexible elongated parts |
CN112097715B (zh) * | 2020-09-03 | 2021-07-06 | 南京贝迪新材料科技股份有限公司 | 一种lcp膜厚度检测装置 |
CN114777714B (zh) * | 2022-03-31 | 2024-03-01 | 广东康怡卫生用品有限公司 | 一种卫生用品厚度测量方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5220282A (en) * | 1975-08-08 | 1977-02-16 | Sumitomo Electric Ind Ltd | Means for simultaneously measuring cable outer diameter diameter devia tion |
JPH03291505A (ja) * | 1990-04-08 | 1991-12-20 | Anritsu Corp | 厚み測定装置 |
JPH10227747A (ja) * | 1997-02-14 | 1998-08-25 | Sunx Ltd | 線条体検査装置 |
JPH11185554A (ja) * | 1997-12-22 | 1999-07-09 | Furukawa Electric Co Ltd:The | 電線外径制御装置および方法 |
JP2003156313A (ja) * | 2001-11-20 | 2003-05-30 | Mitsubishi Cable Ind Ltd | 平角ワイヤ寸法測定装置 |
JP2005123116A (ja) * | 2003-10-20 | 2005-05-12 | Sumitomo Electric Ind Ltd | 絶縁電線の製造方法及び製造装置並びに通信ケーブル |
JP2007214042A (ja) * | 2006-02-10 | 2007-08-23 | Furukawa Electric Co Ltd:The | 押出被覆ケーブルの被覆厚制御方法 |
WO2008126375A1 (ja) * | 2007-03-30 | 2008-10-23 | The Furukawa Electric Co., Ltd. | 絶縁電線の製造方法及びその製造装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH667327A5 (de) * | 1984-06-18 | 1988-09-30 | Zumbach Electronic Ag | Verfahren und vorrichtung zum pruefen der wandstaerke einer isolierenden schicht. |
JP3420563B2 (ja) * | 2000-10-05 | 2003-06-23 | タキカワエンジニアリング株式会社 | 被覆電線用偏心度測定装置 |
US6975410B1 (en) * | 2002-04-15 | 2005-12-13 | Sturgill Dennis T | Measuring device |
DE10259696B4 (de) * | 2002-12-18 | 2018-07-05 | Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg | Vorrichtung zum Messen der Dicke dünner Schichten |
US7564552B2 (en) * | 2004-05-14 | 2009-07-21 | Kla-Tencor Technologies Corp. | Systems and methods for measurement of a specimen with vacuum ultraviolet light |
US7903265B2 (en) * | 2008-04-04 | 2011-03-08 | Toyota Motor Engineering & Manufacturing North America, Inc. | Method for measuring coating uniformity |
CN102353347A (zh) * | 2011-06-15 | 2012-02-15 | 沈阳飞机工业(集团)有限公司 | 多根电线电缆绝缘层或护套同心度的测量方法 |
JP5692597B2 (ja) | 2011-07-08 | 2015-04-01 | 日立金属株式会社 | 平角エナメル線用塗装ダイス及び平角エナメル線の製造方法 |
CN202149760U (zh) * | 2011-07-15 | 2012-02-22 | 大亚电线电缆股份有限公司 | 电线绝缘层真圆度测试固定模 |
JP5821410B2 (ja) | 2011-08-24 | 2015-11-24 | 住友電気工業株式会社 | 絶縁電線の製造方法 |
JP5791431B2 (ja) * | 2011-08-30 | 2015-10-07 | 三菱日立パワーシステムズ株式会社 | 膜厚測定装置及び膜厚測定方法 |
JP6309868B2 (ja) * | 2014-09-26 | 2018-04-11 | 株式会社神戸製鋼所 | 形状測定装置および形状測定方法 |
-
2014
- 2014-10-10 US US15/028,377 patent/US10001366B2/en active Active
- 2014-10-10 CN CN201480055320.5A patent/CN105612402B/zh active Active
- 2014-10-10 WO PCT/JP2014/005189 patent/WO2015052941A1/ja active Application Filing
- 2014-10-10 JP JP2015541445A patent/JP6429787B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5220282A (en) * | 1975-08-08 | 1977-02-16 | Sumitomo Electric Ind Ltd | Means for simultaneously measuring cable outer diameter diameter devia tion |
JPH03291505A (ja) * | 1990-04-08 | 1991-12-20 | Anritsu Corp | 厚み測定装置 |
JPH10227747A (ja) * | 1997-02-14 | 1998-08-25 | Sunx Ltd | 線条体検査装置 |
JPH11185554A (ja) * | 1997-12-22 | 1999-07-09 | Furukawa Electric Co Ltd:The | 電線外径制御装置および方法 |
JP2003156313A (ja) * | 2001-11-20 | 2003-05-30 | Mitsubishi Cable Ind Ltd | 平角ワイヤ寸法測定装置 |
JP2005123116A (ja) * | 2003-10-20 | 2005-05-12 | Sumitomo Electric Ind Ltd | 絶縁電線の製造方法及び製造装置並びに通信ケーブル |
JP2007214042A (ja) * | 2006-02-10 | 2007-08-23 | Furukawa Electric Co Ltd:The | 押出被覆ケーブルの被覆厚制御方法 |
WO2008126375A1 (ja) * | 2007-03-30 | 2008-10-23 | The Furukawa Electric Co., Ltd. | 絶縁電線の製造方法及びその製造装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018147803A (ja) * | 2017-03-08 | 2018-09-20 | 住友電気工業株式会社 | ケーブルの製造方法、ケーブルの検査方法およびケーブル外観検査装置 |
WO2018168452A1 (ja) * | 2017-03-17 | 2018-09-20 | 住友電気工業株式会社 | 絶縁電線の製造方法 |
JPWO2018168452A1 (ja) * | 2017-03-17 | 2020-02-13 | 住友電気工業株式会社 | 絶縁電線の製造方法 |
JP7046914B2 (ja) | 2017-03-17 | 2022-04-04 | 住友電気工業株式会社 | 絶縁電線の製造方法 |
JP2020079725A (ja) * | 2018-11-12 | 2020-05-28 | 住友重機械工業株式会社 | 配管の肉厚推定方法及び配管の肉厚推定装置 |
JP7260996B2 (ja) | 2018-11-12 | 2023-04-19 | 住友重機械工業株式会社 | 配管の肉厚推定方法及び配管の肉厚推定装置 |
Also Published As
Publication number | Publication date |
---|---|
CN105612402B (zh) | 2019-01-11 |
US10001366B2 (en) | 2018-06-19 |
JPWO2015052941A1 (ja) | 2017-03-09 |
JP6429787B2 (ja) | 2018-11-28 |
US20160258740A1 (en) | 2016-09-08 |
CN105612402A (zh) | 2016-05-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6429787B2 (ja) | 被覆厚さ検査方法及び被覆厚さ検査装置 | |
RU2620868C2 (ru) | Система и способ контроля качества изделия | |
JP6437107B2 (ja) | センサ装置、測定装置及び測定方法 | |
US20150039245A1 (en) | System and method of non-destructive inspection with a visual scanning guide | |
EP2799809B1 (en) | Method for measuring shape of threaded tube end portion | |
JP2009282027A6 (ja) | 導電性材料からなる試験対象物における特に亀裂の渦電流表示を判定して評価する方法 | |
CN106225737B (zh) | 电缆触头表面不平度检测装置及其检测方法 | |
JP2014009976A (ja) | 3次元形状計測用x線ct装置およびx線ct装置による3次元形状計測方法 | |
CN105004742A (zh) | 一种像质计及应用该像质计的射线检测质量判定方法 | |
JP2012145441A (ja) | ワーク寸法測定装置 | |
US9222918B2 (en) | Sizing of a defect using phased array system | |
TWI588446B (zh) | X-ray non-destructive inspection device | |
EP3671189A2 (en) | Testcomponent for non-destructive testing | |
JP2013130392A (ja) | X線非破壊検査装置 | |
US9772259B2 (en) | Method for calibrating an X-ray testing system for a tire type and method for checking the position of cords in a tire | |
GB2575543A (en) | Apparatus for monitoring a coating | |
WO2014136194A1 (ja) | X線非破壊検査装置 | |
JP2016024067A (ja) | 計測方法および計測装置 | |
KR101789239B1 (ko) | 유도 기전력을 이용한 비파괴 검사장치 | |
CN114965519A (zh) | 基于射线数字成像物体内部结构位置定位方法及系统 | |
CN115077412A (zh) | 型面检测设备和型面检测方法、存储介质 | |
CN105043210A (zh) | 一种物体表面镀层厚度的检测装置及过程管控方法 | |
JP7410606B1 (ja) | 非破壊検査方法及び非破壊検査装置 | |
JP2009133745A (ja) | 検査方法及び検査装置 | |
JP2020020593A (ja) | 放射線検査装置及び放射線検査方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14851649 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015541445 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15028377 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14851649 Country of ref document: EP Kind code of ref document: A1 |