JP2007040866A - Inspection device and inspection method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection method and an inspection device which detects an irregular deformation automatically in a practical use level, in stead of conventional visual inspection. <P>SOLUTION: This inspection device is provided with: a laser detection part having an irradiation part for emitting a prescribed cross-sectional width of laser beam, and a photoreception part for receiving the laser beam from the irradiation part to detect luminous energy thereof; an irregular deformation detection processing part for judging the presence of the deformation in a flange part, based on the luminous energy detected by the laser detection part; and a conveying part for holding a work on a laser detection part, in a grounding face side of the flange, while making the flange part thereof directed toward a top side, and for supplying conveyingly it to the laser detection part while rotating on the laser detection part around a cylindrical-directional center line of an extraction part thereof as an axis, to be conveyed out from the laser detection part. The laser detection part emits the laser beam along a face part in the top side of the flange in the work, to be received, and the irregular deformation detection processing part detects the presence or absence of the irregular deformation in the flange part, based on a change in the luminous energy of the laser beam accompanied by a positional change of the face part in the top side of the flange in the work. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an inspection apparatus and inspection method for inspecting irregular deformation of a flange portion using a spout member having a cylindrical extraction portion and a flange portion integrally disposed at one end thereof as a workpiece. About.

In recent years, the demand for packaging containers such as paper cartons has been increasing.
These spouts are, for example, spout members having a cylindrical spout portion 62 and a flange portion 61 integrally disposed on one end side thereof, as shown in cross section in FIG. 60 is added to the paper container as shown in FIG. 5B, and the pull tab 63 is pulled, the notch 64 is broken, and the thin portion 65 is removed together with the pull tab 63 to serve as a spout. used.
In addition, there also exists a form which requires the lid | cover which cuts a screw | thread outside the extraction | pouring part 62 and matches this.
In the production of the flange portion 61 of such a spout member 60, deformation may occur in a concave shape or a convex shape. When the flange portion having such a deformation is bonded to the inner surface of the container, it is used. In some cases, there was a quality problem in terms of adhesion.
For this reason, conventionally, the spout member 60 is continuously conveyed by a conveyer and visually inspected by a person to detect such deformation, and those with deformation are removed as defective products.
However, the visual inspection by humans has the disadvantage that the inspection takes time, and the inspection results have variations and individual differences.
In addition, although the surface on the opposite side to the extraction | pouring part 62 of the flange part 61 is called concave deformation here and a convex thing is called convex deformation, normally, the flange part of a location with a concave deformation part is called. The surface of 61 on the side of the extraction portion 62 is deformed into a convex shape, and the surface on the side of the extraction portion 62 of the flange portion 61 where the convex deformation portion is present is deformed into a concave shape.

Incidentally, Japanese Patent Application Laid-Open No. 11-58559 (Patent Document 1) and Japanese Patent Application Laid-Open No. 9-142456 (Patent Document 2) describe a paper container spout having such a structure.
JP 11-58559 A JP-A-9-142456

As described above, in recent years, the demand for packaging containers such as paper cartons has increased, and along with this, a cylindrical pouring portion 62 and one end thereof as shown in FIG. The spout member 60 having the flange portion 61 integrally disposed on the side has been used, and spouts have been added more often. For inspection of such irregular deformation of the spout member. However, instead of the conventional visual inspection of humans, there has been a demand for an inspection method capable of automatically detecting uneven deformation.
This invention respond | corresponds to this, and it aims at providing the inspection method and inspection apparatus which can detect an uneven | corrugated deformation | transformation automatically by a practical level instead of the conventional visual inspection of a person.

An inspection apparatus according to the present invention is an inspection apparatus that inspects irregular deformation of a flange portion using, as a workpiece, a spout member having a cylindrical extraction portion and a flange portion integrally disposed on one end thereof. A laser detection unit having an irradiation unit for irradiating a laser beam having a predetermined cross section, a light receiving unit for receiving the laser beam from the irradiation unit and detecting the amount of light; and a light amount detected by the laser detection unit. An uneven deformation detection processing unit that determines whether or not the flange portion is deformed, and a workpiece are held on a predetermined horizontal plane on the ground side of the flange portion, and the workpiece is held on the ground side of the flange portion. The laser detection unit includes a conveyance unit that conveys and supplies the laser detection unit while rotating on the predetermined horizontal plane with the cylindrical center line as an axis, and unloads the laser detection unit. Top surface of workpiece flange The uneven deformation detection processing unit is configured to detect uneven deformation due to a change in the amount of light received by the laser light accompanying a change in the position of the top surface of the workpiece flange. It is characterized by detecting the presence or absence of defects.
In the inspection apparatus described above, the conveyance unit sandwiches the workpiece extraction unit between two rows of rail-shaped or belt-shaped guide support units (also simply referred to as support units or guides) along the conveyance direction. The workpiece is held and conveyed by the ground side surface of the flange portion, and the rotation is caused by adjusting the moving speed along the conveying direction of the two rows of guides, respectively. It is a feature.
The inspection apparatus according to claim 2, wherein the conveyance unit uses two rows of rail-shaped guide support units to convey the workpiece in an arc shape and supply the workpiece to the laser detection unit. The guide support portion on the center side of the circle on which the arc is carried is placed in a circle on the rotary table and moves by the rotation of the rotary table. The other guide support portion is fixed in its position and does not move.
Alternatively, in the inspection apparatus according to claim 2, the transport unit uses two rows of rotating belt-shaped guide support units, transports the workpiece in a straight line, and places the workpiece on the laser detection unit. It supplies and carries out from the said laser detection part, Each guide support part moves at a different speed, respectively, It conveys a workpiece | work, It is characterized by the above-mentioned.
In addition, the inspection apparatus according to any one of the above, wherein the inspection apparatus includes a supply conveyor that supplies a work to the transport unit and a discharge conveyor that discharges the work from the transport unit. .
Further, in any of the inspection apparatuses described above, in accordance with a trigger signal from a workpiece position detection sensor arranged in the laser detection unit, the laser detection unit captures an image of a workpiece and the imaging unit images the workpiece. And a defect detection processing unit using an image for detecting the presence or absence of a defect such as a foreign substance in the flange portion by performing image processing on the obtained image data. In addition, here, as for the surface on the opposite side to the extraction | pouring part of a flange part, a concave thing is called concave deformation, and a convex thing is called convex deformation.

The inspection method of the present invention is an inspection method for inspecting uneven deformation of a flange portion using a spout member having a cylindrical extraction portion and a flange portion integrally disposed on one end side as a workpiece. The workpiece is held on a predetermined horizontal plane with the flange portion on the top side and on the ground-side surface side of the flange portion, and on the horizontal plane with the cylindrical center line of the pouring portion as an axis. Rotate with a laser beam with a predetermined cross-section along the top surface of the flange part of the workpiece and detect the amount of light received. Accordingly, the presence or absence of the irregular deformation defect is detected from the change in the amount of received laser light.
In the inspection method described above, the ground portion of the flange portion is sandwiched between two rows of rail-like or belt-like guide support portions (also simply referred to as support portions or guides) along the transport direction so as to sandwich the workpiece pouring portion. The work is held and transported on the side surface, and the rotation is caused by adjusting the moving speed along the transport direction of the two rows of guides, respectively. is there.

(Function)
By adopting such a configuration, the inspection apparatus of the present invention can provide an inspection apparatus that can automatically detect uneven deformation at a practical level, instead of the conventional visual inspection of a person.
Specifically, a laser detection unit having an irradiation unit for irradiating a laser beam having a predetermined cross section, a light receiving unit for receiving the laser beam from the irradiation unit and detecting the amount of light, and detected by the laser detection unit An uneven deformation detection processing unit that determines the presence or absence of deformation of the flange portion from the amount of light, and the workpiece is held on a predetermined horizontal surface on the ground side of the flange portion, and the workpiece is poured out. The laser detection unit includes a conveyance unit that conveys and supplies the laser detection unit while being rotated on the predetermined horizontal plane about the cylindrical center line of the unit, and is carried out of the laser detection unit. Is for receiving and irradiating a laser beam along the top surface portion of the flange portion of the workpiece, and the uneven deformation detection processing section accompanies a change in the position of the top surface portion of the flange portion of the workpiece. From the change in the amount of received laser light, By and detects the presence or absence of the convex deformation defects have achieved this.
Specifically, as shown in FIG. 3 (a), when there is no uneven deformation in the flange portion, a predetermined amount of light is received, but when there is a convex deformation 61A in the flange portion, a note of this convex deformation portion is received. Since the surface on the outlet portion 62 side is deformed concavely, as shown in FIG. 3B, the flange portion 61 does not float with respect to the horizontal plane S1, and the whole surface is in a horizontal plane, and the rotational position of the spout member 60 As a result, the amount of light received only at the location blocked by the convex portion is reduced as compared with the normal case.
Further, when the flange portion has a concave deformation 61B, the surface of the concave deformation portion on the side of the extraction portion 62 is convexly deformed, and therefore, as shown in FIG. 3C, the flange portion 61 with respect to the horizontal plane S1. The whole is in a floating state, and the amount of light received regardless of the rotational position of the spout member 60 is reduced as compared with the normal case.
Thus, by holding the spout member 60 on the horizontal plane S1 and rotating and inspecting it on the horizontal plane S1, both the concave deformation and the convex deformation can be detected separately. Then, the conveying unit is arranged on the surface on the ground side of the flange portion so as to sandwich the workpiece pouring portion by two rows of rail-like or belt-like guide supporting portions (also simply referred to as supporting portions or guides) along the conveying direction. By holding the work and transporting it, and adjusting the moving speed along the transport direction of the two rows of guides, respectively, the rotation is caused. The workpiece is held on a predetermined horizontal plane with the flange portion on the top side and the ground side surface side of the flange portion, and the workpiece is rotated on the predetermined horizontal plane with the cylindrical center line of the extraction portion as an axis. However, it can be conveyed and supplied to the laser detector.
As this form, the conveyance unit uses two rows of rail-shaped guide support units, conveys the workpiece in an arc shape, supplies the workpiece to the laser detection unit, and carries it out of the laser detection unit. One guide support part on the center side of the circle on which the arc rests is placed in a circle on the rotary table and moves by the rotation of the rotary table, and the other guide support part has its position. The form of the invention of claim 3 which is fixed and does not move, and the transport unit uses two rows of rotating belt-like guide support units to transport the work in a straight line, and the work is placed on the laser detection unit. An embodiment of the invention of claim 4 is provided in which each guide support part is moved at a different speed to convey a workpiece by being supplied and carried out from the laser detection part.
Moreover, the form which has the supply conveyor which supplies a workpiece | work to the said conveyance part, and the discharge conveyor which discharges a workpiece | work from the said conveyance part is mentioned.

Furthermore, by the trigger signal from the workpiece position detection sensor arranged in the laser detector,
The laser detection unit includes an imaging unit that images a workpiece, and an image defect detection processing unit that performs image processing on image data captured by the imaging unit to detect the presence or absence of defects such as foreign matter on the flange portion. According to the sixth aspect of the present invention, it is possible to detect irregularities and detect foreign matter or the like in the flange portion.

  By adopting such a configuration, the inspection method of the present invention can provide an inspection method that can automatically detect irregular deformation at a practical level, instead of the conventional visual inspection of a person.

  As described above, the present invention makes it possible to provide an inspection apparatus and an inspection method that can automatically detect uneven deformation at a practical level, instead of the conventional visual inspection of a person.

Embodiments of the present invention will be described with reference to the drawings.
1A is a schematic plan view of a first example of an embodiment of the inspection apparatus of the present invention, FIG. 1B is a cross-sectional view taken along A1-A2 in FIG. 1A, and FIG. ) Is a schematic plan view of a second example of the embodiment of the inspection apparatus of the present invention, FIG. 2 (b) is a view seen from the B1-B2 direction of FIG. 2 (a), and FIG. FIG. 4A is a cross-sectional view for explaining a change in the light amount of the light receiving portion of the laser detection portion in convex deformation, and FIG. 4A is a view for explaining the cross-sectional shape of the laser light from the laser irradiation portion. ) Is a diagram when the laser beam does not pass through the convex deformation portion, and FIG. 4C is a diagram when the laser beam passes through the convex deformation portion.
In FIG. 3, S <b> 1 is also referred to as a horizontal surface that rotates with the support surface supporting the spout member. Dotted lines C0, C1, and C2 indicate lower limits through which the laser beam passes, respectively.
Moreover, although the screw | thread is cut off the outer side of the extraction | pouring part 62, in FIG. 3, the threaded part is abbreviate | omitted and shown for convenience.
Although the spout member 60 in FIG. 3 is not shown, it is a form using a lid suitable for threading.
1-4, 10 is a transport unit, 11 is a rotary table, 12 is a guide support unit, 13 is a guide support unit (fixed position), 20 is a laser detection unit, 21 is a laser irradiation unit, and 22 is a laser receiving unit. 23, 23A is a laser beam, 23S is a laser cross-sectional shape, 30 is a supply conveyor, 40 is a discharge conveyor, 50 is an air ejection device, 60 is a spout member (also called a workpiece), and 60a has a convex deformation. A spout member, 60b is a concave spout member, 61 is a flange, 61A is convex, 61B is concave, 62 is a spout, 63 is a pull tab, 64 is a notch, and 65 is thin. , 70 is an uneven deformation detection processing unit, 110 is a transport unit, 111 is a guide support unit, 112 is a guide support unit, 120 is a laser detection unit, 121 is a laser irradiation unit, 122 is a laser receiving unit, 123 is a laser beam, 40 the discharge conveyor 160 is a spout member (also referred to as workpiece) 170 is uneven deformation detection processing unit.

A first example of an embodiment of an inspection apparatus according to the present invention will be described with reference to FIG.
The inspection apparatus according to the first example uses a spout member 60 having a cylindrical spout portion 62 and a flange portion 61 integrally disposed at one end thereof as a workpiece, and the concave and convex deformation of the flange portion 61. A laser detecting unit 20 having an irradiation unit 21 that irradiates a laser beam 23 having a predetermined cross section and a light receiving unit 22 that receives the laser beam from the irradiation unit 21 and detects the amount of the laser beam; The concave / convex deformation detection processing unit 70 that determines the presence / absence of deformation of the flange portion from the amount of light detected by the laser detection unit 20, and the workpiece 60, with the flange portion 61 on the top side and the ground side surface side of the flange portion. The laser is held on a predetermined horizontal plane (here, the top side surfaces of the pair of guide support portions 12 and 13) and rotated on the horizontal plane about the cylindrical center line of the extraction portion 62 as an axis. Transport and supply to the detection unit 20, and It is obtained by a transport unit 10 to be transferred out from the laser detector 20.
Although not shown here, the operation of each unit is managed in association with the control unit using a sensor such as a position sensor.

The conveyance unit 10 holds the workpiece 60 on the ground-side surface of the flange portion 61 and conveys it with the rail-shaped guide support portions 12 and 132 rows along the conveyance direction sandwiching the extraction portion 62 of the workpiece 60. In this example, the guide support portion 13 is fixed in position, and the guide support portion 12 is fixed in a circular shape to the rotary table 11 and rotates together with the rotary table 11 as shown in FIG. It has become.
The work 60 is transported by the rotation of the rotary table 11. Here, the moving speeds of the guide support portions 12 and 13 along the transport direction are different, and thus the work 60 is in the cylindrical direction of the dispensing portion 62. It rotates on the horizontal plane around the center line.

The laser detector 20 irradiates the laser beam 23 with a predetermined width from the irradiation unit 21 along the top surface of the flange 61 of the workpiece 60 and receives the light at the light receiving unit 22 when appropriate.
The concave / convex deformation detection processing unit 70 detects the presence / absence of a concave / convex deformation defect from a change in the amount of received laser light accompanying a change in the position of the top surface of the flange portion 61 of the workpiece 60.
As shown in FIG. 4 (a), the laser beam here has a rectangular shape with a predetermined width and width (top and bottom side width and horizontal side width), and in the case of a normal spout member 60 without deformation. As shown in FIG. 3A, the ground side is slightly caught on the flange portion.
As described above, the ground surface side of the flange portion 61 is positioned on a predetermined horizontal plane S1 and held by the flat upper surfaces (top surfaces) of the guide support portions 12 and 13; The spout member 60 rotates on the horizontal plane around the center line in the cylindrical direction of the spout 62 due to the difference in moving speed along the transport direction of the guide supports 12 and 13.
Since the spout member 60 receives light in this way, the light receiving unit always receives a certain amount of light when there is no deformation.
However, when the flange portion 61 has the convex deformation 61A (see FIG. 6B), as shown in FIG. 3B, only the convex deformation portion protrudes from the normal position to the top side, so that the protruding convex The light receiving unit receives a smaller amount of light than the case of the normal spout member 60 (see FIG. 3A) by the amount that the deformed portion blocks the laser light.
Depending on the position where the convex deformation occurs, the convex deformation may not block the laser light as shown in FIG. 4B, or the convex deformation may block the laser light as shown in FIG. 4C. In this example, when the light is received, the spout member 60 is placed in the horizontal plane with the center line in the cylindrical direction of the extraction portion 62 as an axis so that a convex deformation portion enters the traveling direction of the laser light. Rotating above. When the flange portion 61 has a concave deformation 61B (see FIG. 6C), the ground side surface of the flange portion 61 on the side held by the guide support portion 12 is normal as shown in FIG. Therefore, the entire side supported by the guide support portion 12 floats more than in the normal holding state, and the spout member 60 is placed on the horizontal plane with the cylindrical center line of the spout portion 62 as an axis. At any position due to the rotation above, the light receiving unit has a smaller amount of light compared to the case of the normal spout member 60 (see FIG. 3A) by the amount that the laser beam is blocked. Receive light.
In this way, the laser detector 20 detects a change in the light amount of the convex deformation 61A and the concave deformation 61B.
The concave / convex deformation detection processing unit 70 determines the presence / absence of deformation, and whether the deformation is concave or convex depending on the presence / absence of a change in the amount of received light and the nature of the change including rotation.

Next, the processing operation of the inspection apparatus of this example will be briefly described.
This is an explanation of an example of the embodiment of the inspection method of the present invention.
First, the spout member 60 is put into the transport unit 10 from the supply conveyor 30.
The spout member 60 is supported at its flange portion (see FIG. 3A) by the guide support portion 13 fixed in position and the guide support portion 12 fixed to the rotary table 11, so that the rotary table 11 rotates. Along with this, the guide support portion 12 fixed thereto starts to move and move.
In this case, since the position of the guide support portion 13 is fixed, the guide support portion 13 is conveyed while being rotated on the horizontal plane about the cylindrical center line of the extraction portion, and is conveyed to the laser detection portion 20.
The conveyance speed and the rotation speed are controlled by controlling the rotation speed of the rotary table. As described above, the laser detection unit 20 receives the amount of laser light.
And the uneven | corrugated deformation detection process part 70 judges the presence or absence of uneven | corrugated deformation | transformation from the data of the light quantity of the received laser beam.
After detection by the laser detection unit 20, the spout member 60 is further transported and discharged from the transport unit 10 by the discharge conveyor 40.
Here, when the unevenness deformation detection processing unit 70 determines that a certain spout member 60 is deformed, in this example, the air jet unit 50 blows off the normal spout on the discharge conveyor. Separate from parts.

Next, a second example of the embodiment of the inspection apparatus of the present invention will be briefly described with reference to FIG.
As in the first example, the inspection apparatus of the second example uses a spout member 160 having a cylindrical pouring part 162 and a flange part 161 integrally disposed on one end side as a workpiece. An inspection apparatus that inspects the deformation of the flange 161, and includes an irradiation unit 121 that irradiates a laser beam 123 having a predetermined cross section, and a light receiving unit 122 that receives the laser beam from the irradiation unit 121 and detects the amount of light. The laser detection unit 120, the uneven deformation detection processing unit 170 that determines the presence or absence of deformation of the flange from the amount of light detected by the laser detection unit 120, and the workpiece 160, the flange 161 being the top side, the flange Is held on a predetermined horizontal plane (here, the top side surfaces of the pair of guide support portions 111 and 112) on the ground surface side, and on the horizontal plane with the cylindrical center line of the extraction portion 162 as an axis Rotated by While, transported supplied to the laser detector 120, and, in which a conveying section 110 for unloading from the laser detector 120.
And the discharge conveyor 140 which discharges the workpiece | work 160 from the conveyance part 1110 is provided.
Although not shown here, the operation of each unit is managed in association with the control unit using a sensor such as a position sensor.
In the second example, the transport unit 110 uses two rows of rotating belt-shaped guide support units 111 and 112, transports the workpiece 160 in a straight line, supplies the workpiece to the laser detection unit, and supplies the laser. It is carried out from the detection unit, and each guide support unit 111, 112 is moved at a different speed to convey and rotate the workpiece.
Each unit other than the transport unit 110 is the same as that of the first example, and the processing operation is also the same, and the description thereof is omitted.
Also in the second example, the deformed outlet member 160 may be distinguished from the normal one by the air ejection portion, as in the first example.

The first example and the second example are one example of the inspection apparatus of the present invention, and the present invention is not limited to these.
For example, a workpiece position detection sensor is arranged in the laser detection unit 20 (120), and an imaging unit that images the workpiece in the laser detection unit by a trigger signal from the workpiece position detection sensor, and an image captured by the imaging unit A defect detection processing unit based on an image that detects the presence / absence of a defect such as a foreign substance in the flange portion by image processing of data may be provided.
In the above example, the laser detection unit 20 (120) and the uneven deformation detection processing unit 70 (170) are illustrated as separate bodies, but they may be configured integrally.
Further, the removal means for the spout member 160 that is determined to be deformed may be configured such that the means for mechanically conveying and removing or the discharge conveyor is bifurcated.

FIG. 1A is a schematic plan view of a first example of an embodiment of the inspection apparatus of the present invention, and FIG. 1B is a cross-sectional view taken along A1-A2 in FIG. FIG. 2A is a schematic plan view of a second example of the embodiment of the inspection apparatus of the present invention, and FIG. 2B is a view as seen from the B1-B2 direction of FIG. It is sectional drawing for demonstrating the change of the light quantity of the light-receiving part of the laser detection part in concave deformation or convex deformation. FIG. 4A is a diagram for explaining the cross-sectional shape of the laser beam from the laser irradiation unit, FIG. 4B is a diagram when the laser beam does not pass through the convex deformation portion, and FIG. It is a figure in case a laser beam passes a convex deformation location. 5A is a cross-sectional view of an example of a spout member, and FIG. 5B is a cross-sectional view of an example of a paper container using the spout member shown in FIG. 5A. . 6A is a cross-sectional view of a spout member without deformation, FIG. 6B is a cross-sectional view of a spout member with concave deformation, and FIG. 6C is for a spout with convex deformation. It is sectional drawing of a member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Conveyance part 11 Rotary table 12 Guide support part 13 (Fixed position) Guide support part 20 Laser detection part 21 Laser irradiation part 22 Laser receiving part 23, 23A Laser beam 23S Laser cross-sectional shape 30 Supply conveyor 40 Discharge conveyor 50 Air ejection Device 60 Outlet member (also called workpiece)
60a Outlet member 60b with convex deformation Outlet member 61 with concave deformation 61 Flange portion 61A Convex deformation 61B Concave deformation 62 Outlet portion 63 Pull tab 64 Notch portion 65 Thin portion 70 Convex deformation detection processing portion 110 Conveyance portion 111 Guide support part 112 Guide support part 120 Laser detection part 121 Laser irradiation part 122 Laser light receiving part 123 Laser light 140 Discharge conveyor 160 Outlet member (also called workpiece)
170 Concavity and convexity detection processing unit

Claims (8)

  An inspection device for inspecting irregular deformation of a flange portion using a spout member having a cylindrical pouring portion and a flange portion integrally disposed on one end side of the workpiece, and having a predetermined width in cross section A laser detection unit having an irradiation unit for irradiating a laser beam and a light receiving unit for receiving the laser beam from the irradiation unit and detecting the amount of light, and whether the flange portion is deformed based on the light amount detected by the laser detection unit. The concave and convex deformation detection processing unit to be judged and the workpiece are held on a predetermined horizontal surface on the ground side of the flange portion with the flange portion on the top side, and the cylindrical center line of the pouring portion is used as an axis A transport unit that transports and supplies the laser detection unit while being rotated on the predetermined horizontal plane, and transports the laser detection unit out of the laser detection unit. Irradiate laser light along the surface of The concave / convex deformation detection processing unit detects the presence / absence of the concave / convex deformation defect from the change in the amount of received light of the laser light accompanying the change in the position of the top surface of the flange portion of the workpiece. Inspection apparatus characterized by being a thing.   2. The inspection apparatus according to claim 1, wherein the transport unit includes a rail-shaped or belt-shaped guide support unit (also simply referred to as a support unit or a guide) along the transport direction, so that a workpiece extraction unit is provided. The workpiece is held and conveyed by the ground side surface of the flange portion so as to be sandwiched, and the rotation is generated by adjusting the moving speed along the conveying direction of the two rows of guides, respectively. Inspection apparatus characterized by that.   3. The inspection apparatus according to claim 2, wherein the conveyance unit uses two rows of rail-shaped guide support units, conveys the workpiece in an arc shape, supplies the workpiece to the laser detection unit, and supplies the laser to the laser. One of the guide support portions on the center side of the circle on which the circular arc is placed is circularly mounted on the rotary table and moves by the rotation of the rotary table. An inspection apparatus characterized in that the guide support portion is fixed in position and does not move.   3. The inspection apparatus according to claim 2, wherein the transport unit uses two rows of rotating belt-shaped guide support units, transports the workpiece in a straight line, supplies the workpiece to the laser detection unit, and An inspection apparatus which is carried out from a laser detection section and which moves each guide support section at a different speed to convey a workpiece.   5. The inspection apparatus according to claim 1, further comprising a supply conveyor that supplies a work to the transport unit and a discharge conveyor that discharges the work from the transport unit. Characteristic inspection device.   6. The inspection apparatus according to claim 1, wherein an imaging unit that images a workpiece in the laser detection unit by a trigger signal from a workpiece position detection sensor disposed in the laser detection unit, An inspection apparatus comprising: an image defect detection processing unit that performs image processing on image data captured by the imaging unit to detect the presence or absence of defects such as foreign matter and bubbles in the flange portion.   An inspection method for inspecting uneven deformation of a flange portion using a spout member having a cylindrical pouring portion and a flange portion integrally disposed on one end side as a work, the work being Hold the flange part on the top side, the ground side surface side of the flange part on a predetermined horizontal plane, and rotate it on the horizontal plane around the cylindrical center line of the pouring part. A laser beam with a predetermined cross-section is irradiated along the top surface of the flange, and the amount of light received is detected to detect the amount of light received. The amount of laser light received as the position of the top surface of the flange of the workpiece changes. An inspection method characterized by detecting the presence or absence of an irregular deformation defect from a change in the above. The inspection method according to claim 7, wherein a rail portion or a belt-like guide support portion (also simply referred to as a support portion or a guide) along the transport direction is sandwiched between two workpieces, and the flange portion The workpiece is held and conveyed by the ground side surface, and the rotation is caused by adjusting the moving speed along the conveying direction of the two rows of guides, respectively. Inspection method.

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