WO2024089944A1 - Molded article confirmation device - Google Patents

Molded article confirmation device Download PDF

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Publication number
WO2024089944A1
WO2024089944A1 PCT/JP2023/025229 JP2023025229W WO2024089944A1 WO 2024089944 A1 WO2024089944 A1 WO 2024089944A1 JP 2023025229 W JP2023025229 W JP 2023025229W WO 2024089944 A1 WO2024089944 A1 WO 2024089944A1
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WIPO (PCT)
Prior art keywords
molded product
unit
rolling direction
rotation
light
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PCT/JP2023/025229
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French (fr)
Japanese (ja)
Inventor
拓也 森
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東洋製罐株式会社
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Priority claimed from JP2022170525A external-priority patent/JP2024062587A/en
Application filed by 東洋製罐株式会社 filed Critical 東洋製罐株式会社
Publication of WO2024089944A1 publication Critical patent/WO2024089944A1/en

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  • the present invention relates to a molded product inspection device that handles molded products made from rolled metal sheets.
  • Patent Document 1 an apparatus for spraying paint while gripping and rotating the container (molded product) is known, for example from Patent Document 1.
  • the molded product inspection device (material application device 10) of the spray painting system described in Patent Document 1 applies material to the surface of a molded product (workpiece W) and has a workpiece holder that holds the molded product, which is part of the rotating holding section (can rotation drive mechanism 12).
  • the rotary holding section can rotation drive mechanism 12
  • the molded product inspection device material application device 10
  • the molded product inspection device is provided with a liquid injection section (material application mechanism 14), and the material application is controlled to be turned on and off by a control unit (control mechanism 18).
  • the molded product inspection device (material application device 10) is provided with a rolling direction detection section (speed detector or sensor 22) which detects marks, etc. on the molded product (workpiece W) and transmits a signal to the control unit (control mechanism 18).
  • the control unit determines the rotation speed of the molded product (workpiece W) and controls the on/off of material application based on the signal received from the rolling direction detection section (speed detector or sensor 22), thereby minimizing excess coating and shortening the time the molded product (workpiece W) spends in the spray pocket.
  • the molded product inspection device known from Patent Document 1 determines the rotation speed of a molded product by detecting multiple markings on the surface of the molded product, and therefore there was a risk that the rotation speed of a container (molded product) could not be determined from a location without markings, such as a plain molded product that is not printed on, for example. It is also possible to mark unprinted molded products with stickers or the like, but this would increase the number of work steps required for attaching and removing the stickers, which could result in increased costs.
  • the molded product inspection device known from Patent Document 1 begins the material application process after checking the rotation of the molded product with a marker, so it takes time before the material application process itself can begin, which could increase the production time per product.
  • the present invention aims to solve these problems by providing a molded product inspection device that can identify the rolling direction, rotation speed, and rotation angle (number of rotations) of molded products with a simple configuration, even for molded products that do not have markings, and that can prevent increases in the number of processes and production time, as well as increases in costs.
  • the molded product rotation confirmation device of the present invention is a molded product confirmation device having a molded product rotation unit provided with a rotating holding unit that rotatably holds a metal molded product formed from a rolled metal plate and a rolling direction detection unit that detects the rolling direction of the metal molded product held in the rotating holding unit, and a control unit that controls the operation of the molded product rotation unit, in which the rolling direction detection unit has a light emitting unit that irradiates light onto an irradiation target surface having a metallic luster, which is the surface of the metal molded product held in the rotating holding unit, and a light receiving unit that receives light reflected from the irradiation target surface from the irradiation light emitting unit, the light emitting unit irradiates the irradiation target surface with light at a predetermined incident angle from a vertical direction, and the control unit is configured to be able to detect the rolling direction of the metal molded product held in the rotating holding unit based on continuous change information of the intensity of
  • the molded product inspection device of claim 1 uses a rolling direction detection unit to confirm reflected light from the irradiated surface of a metal molded product formed from a rolled metal plate, and controls the molded product rotation unit with a control unit.Therefore, by irradiating light from the light emitting unit onto fine irregularities (rolling marks) that are generated during rolling and remain on the surface of the metal molded product and extend in the rolling direction, and receiving the reflected light, the rolling direction detection unit can detect continuous changes in the intensity of reflected light from the rolling marks, whose direction changes as the metal molded product rotates.
  • control unit can detect the rolling direction of a metal molded product, even if it is not marked, based on the continuous changes in the intensity of the reflected light confirmed by the rolling direction detection section.
  • control unit can capture the rotation of the metal molded product by obtaining information on continuous changes in the intensity of reflected light that accompanies the rotation of the metal molded product from the rolling direction detection unit, and can also control the operation of the molded product rotation unit based on information on the rolling direction, rotation speed, and rotation angle (number of rotations) of the metal molded product.
  • the light emitting unit irradiates the irradiation surface (rolling mark) with light at an incident angle of 5 degrees or more and 15 degrees or less from the vertical direction, so that the continuous change in the intensity of the reflected light from the irradiation surface (rolling mark) can be captured more accurately, and the rolling direction detection unit can more reliably detect the rolling direction of a metal molded product that does not have a mark.
  • the rolling direction detection unit is positioned at a distance of 100 mm or more and 200 mm or less from the irradiated surface (rolling mark). Therefore, the reflected light from the irradiated surface (rolling mark) can be reliably received by the light receiving unit without being significantly attenuated, and the rolling direction detection unit can detect the rolling direction of the metal molded product more reliably.
  • the control unit is configured to be able to calculate the rotational speed from the time of change in the rolling direction of the metal molded product held in the rotating holding unit based on the information of continuous changes in the intensity of the reflected light received by the light receiving unit received from the rolling direction detection unit. This allows the control unit to capture changes in the rotational speed of the metal molded product in more detail, and the control unit can more accurately grasp situations such as when slippage occurs during rotation of the metal molded product, and appropriately control the operation of the molded product rotation unit according to the situation of the rotating holding unit.
  • the molded product discharge section has a normal discharge path and an error discharge path
  • the control unit instructs the molded product discharge section to discharge the metal molded product discharged from the rotating unit from either the normal discharge path or the error discharge path based on the calculated rotational speed of the metal molded product held in the rotating holding section.
  • the control unit can determine from information on the rotational speed of the metal molded product whether it is a normal product in which the work performed on the metal molded product was completed normally, or an error product in which the work was not completed normally, and can reliably discharge the metal molded product into the normal discharge path and the error discharge path.
  • the molded product rotation unit has a liquid injection section that injects liquid toward the metal molded product while the metal molded product held in the rotating holding section is rotating, so that the control unit can determine whether or not sufficient liquid has been injected onto the surface of the metal molded product from information on the rotation speed of the metal molded product. This allows the control unit to easily determine whether or not work within the molded product rotation unit has been completed successfully from information on the rotation speed of the metal molded product.
  • the control unit is configured to control the start and end of liquid spray from the liquid spray section based on the calculated rotational speed of the metal molded product held in the rotating holding section, so that the control unit can always adjust the spray time of liquid from the liquid spray section in accordance with changes in the rotational speed of the metal molded product, and can reliably apply the required amount of liquid to the metal molded product.
  • the rolling direction detection unit is composed of a reflective laser sensor, the device can be constructed using inexpensive and easily procured products, and an increase in the cost of the device can be suppressed.
  • the reflected light from the irradiated surface of the metal molded product formed from the rolled metal plate held by the rotating and holding means is confirmed by the rolling direction detection means.
  • the irradiated light is directed at the fine irregularities (rolling marks) remaining on the surface of the metal molded product that are generated during rolling and extend in the rolling direction, and the reflected light is received, thereby making it possible to confirm the continuous change in the intensity of the reflected light from the rolling marks, whose direction changes as the metal molded product rotates.
  • the rolling direction of the metal formed product can be detected based on the continuous change in the intensity of the reflected light confirmed by the rolling direction detection means.
  • the rolling direction detection means can obtain information on continuous changes in the intensity of reflected light that accompanies the rotation of the metal molded product, thereby enabling the rotation of the metal molded product to be captured. Therefore, based on information on the rolling direction, rotation speed, and rotation angle (number of rotations) of the metal molded product, it is possible to control, for example, the handling of the metal molded product, such as holding and rotation, by the rotating and holding means.
  • FIG. 1 is a schematic front view of a molded product inspection device 100 according to an embodiment of the present invention.
  • 2 is a schematic cross-sectional side view of a coating area S of the molded product inspection device 100 according to one embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing a state 1 in which irradiation light B1 is irradiated from a rolling direction detection unit 125 onto a rotating molded product C in a molded product inspection device 100 according to an embodiment of the present invention.
  • FIG. 1 is a schematic front view of a molded product inspection device 100 according to an embodiment of the present invention.
  • 2 is a schematic cross-sectional side view of a coating area S of the molded product inspection device 100 according to one embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing a state 1 in which irradiation light B1 is irradiated from a rolling direction detection unit 125 onto a rotating molded product C in a molded product inspection device 100 according to an
  • FIG. 1 is a schematic diagram showing a state 2 in which the rotating molded product C is irradiated with irradiation light B1 from a rolling direction detection unit 125 in the molded product rotation confirmation device 100 according to one embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing a state 2 in which the rotating molded product C is irradiated with irradiation light B1 from a rolling direction detection unit 125 in the molded product rotation confirmation device 100 according to one embodiment of the present invention.
  • FIG. 1 is a schematic diagram showing the positional relationship between a rolling direction detection unit 125 and an irradiation target surface Cs of a molded product inspection device 100 according to an embodiment of the present invention.
  • FIG. 4 is a flowchart showing a flow of a series of operations for detecting rotation of a molded product C by the molded product inspection device 100 according to one embodiment of the present invention.
  • a molded product inspection device 100 according to an embodiment of the present invention will be described with reference to the drawings.
  • the molded product receiving section, the control unit, and the molded product discharging section are not shown in the drawings.
  • the molded product inspection device 100 handles molded product C, which is a metal molded product formed from a rolled metal plate, and has a molded product receiving section (not shown) that receives molded product C from an upstream process to the rotating holding section 122 of the molded product rotation unit 120 on the turret 110, a molded product discharge section (not shown) that discharges molded product C from the rotating holding section 122 of the molded product rotation unit 120 to a downstream process, and a control unit (not shown) that controls the operation of the molded product rotation unit 120 including the molded product receiving section (not shown) and the molded product discharge section (not shown).
  • the molded product rotation unit 120 has a rotation holding section 122 that rotatably holds the molded product C in a pocket 123 in a molded product receiving section (not shown) and transports it to a molded product discharge section (not shown) via a coating area S, a rotation transmission belt 121 that transmits rotational force to the molded product C in the coating area S, a rolling direction detection section 125 that detects the rolling direction required to capture the rotation of the molded product C in the coating area S, and a liquid injection section 130 that sprays coating liquid (paint) at any position on the molded product C rotating in the coating area S.
  • the liquid jetting unit 130 will be described as jetting the coating liquid onto the bottom portion Cb of the molded product C.
  • the rotary holder 122 is provided with a pocket 123 for receiving and holding the molded product C, and rollers 124 for rotatably supporting the body portion Cm of the molded product C received in the pocket 123.
  • the rolling direction detection unit 125 has an emitter 126 that emits irradiation light B1 onto an irradiation target surface Cs, which is any location on the bottom Cb of the molded product C, and a light receiver 127 that receives reflected light B2 of the irradiation light B1 reflected by the irradiation target surface Cs, and is configured to be able to transmit information on continuous changes in the intensity of the reflected light B2 to a control unit (not shown).
  • At least the bottom portion Cb of the molded product C has the metallic gloss surface of the rolled metal plate exposed.
  • the surface of the rolled metal plate or molded product C may be covered with a transparent paint, ink, transparent resin, or the like, as long as it does not block the light B1 irradiated onto the glossy metal surface or the light B2 reflected from the glossy metal surface.
  • the material of the molded product C is not limited as long as it is a rolled metal plate having a metallic luster. For example, an aluminum plate or a steel plate can be used.
  • the molded product inspection device 100 is started, and as shown in FIG. 1, the molded product C transported from an upstream process is supplied to the molded product receiving section (not shown) of the molded product rotation unit 120 (step 1), and is then received by the rotating holding section 122 provided on the turret 110 (step 2).
  • the molded product C is guided into a pocket 123 of the rotary holder 122, and the body portion Cm is supported by rollers 124 so as to be rotatable about the central axis of the molded product C as the center of rotation.
  • the molded product C held by the rotary holder 122 is transported to the coating area S by the rotation of the turret 110 as shown in FIG. 2 (step 2). At this time, the molded product C is positioned so as to be sandwiched between the rotation transmission belt 121 and the roller 124, and starts to rotate as the rotation force is transmitted by the rotation transmission belt 121 (step 3).
  • the liquid injection unit 130 begins to inject the coating liquid onto the bottom Cb of the molded product C for a predetermined period of time, and the light emitting unit 126 of the rolling direction detection unit 125 begins to irradiate the irradiation target surface Cs with irradiation light B1 at a predetermined angle, thereby starting to check the rotation of the molded product (step 4).
  • the irradiation target surface Cs is the location at which the irradiation light B1 emitted from the light emitting unit 126 reaches the bottom Cb of the molded product C, regardless of the rotation of the bottom Cb of the molded product C.
  • the irradiation light B1 that reaches the irradiation target surface Cs is reflected and becomes reflected light B2.
  • the light receiving section 127 receives only a portion of the reflected light B2.
  • the state of the irradiation target surface Cs changes as the molded product C rotates, and the intensity of the reflected light B2 that can be received by the light receiving unit 127 also changes.
  • state 1 and state 2 indicate predetermined states during rotation of molded product C, and if the rotation angle of molded product C in state 1 is 0 degrees, the rotation angle of molded product C in state 2 is 90 degrees.
  • the bottom Cb has countless rolling marks Ct, which are fine irregularities (rolling mark peaks Ct1 and rolling mark valleys Ct2) extending in the rolling direction.
  • the rolling marks Ct extend in the vertical direction, and in state 2, the molded product C is rotated 90 degrees from state 1, so that the rolling marks Ct extend in the horizontal direction, as shown in Figure 5.
  • the irradiation light B1 reaches the rolling grain Ct of the irradiation target surface Cs. Since the rolling marks Ct extend in the vertical direction, the irradiated light B1 is irradiated from the peaks Ct1 to the valleys Ct2 of the rolling marks Ct, and the reflected light B2 is reflected from the irradiation target surface Cs so as to be diffused at various angles from the rolling marks Ct.
  • the rolling marks Ct extend in the vertical direction, when the irradiation light B1 is irradiated in the same direction as the extension direction of the rolling marks Ct at a predetermined incident angle B1d as shown in FIG. 4, the component of the reflected light B2 that is at the angle of regular reflection increases, and the component of the reflected light B2 that can be received by the light receiving unit 127 that is diffuse reflection is small, and the intensity of the reflected light B2 received by the light receiving unit 127 becomes small.
  • the irradiated light B1 reaches the rolling marks Ct extending laterally on the irradiation target surface Cs. Since the rolling eye Ct extends in the horizontal direction, the irradiated light B1 irradiated from the peak Ct1 to the valley Ct2 of the rolling eye Ct is reflected largely from the connection surface Ct3 between the peak Ct1 and the valley Ct2 of the rolling eye Ct, as shown in Figure 6. As a result, there is a greater amount of diffuse reflection component compared to state 1, and a greater amount of reflected light B2 can be received by the light receiving unit 127, and the intensity of the reflected light B2 received by the light receiving unit 127 becomes greater.
  • the rolling marks Ct again extend vertically, as in state 1, and the amount of reflected light B2 that can be received by the light receiving unit 127 again decreases, and when the molded product C is rotated another 90 degrees (270 degrees), the rolling marks Ct again extend horizontally, as in state 2, and the amount of reflected light B2 that can be received by the light receiving unit 127 again increases.
  • the continuous change in intensity of the reflected light B2 received by the light receiving section 127 periodically occurs twice during one rotation of the molded product C, with a small peak at an angle of 0 degrees (180 degrees) and a large peak at an angle of 90 degrees (270 degrees).
  • the rolling direction of the molded product C can be detected by the rolling direction detection unit 125 from the continuous change in intensity of the reflected light B2 received by the light receiving unit 127 when light is irradiated onto the rolling mark Ct of the bottom Cb of the molded product C.
  • the control unit (not shown) can identify the rotation angle and rotation speed of the molded product C based on the number of peaks in the continuous change in intensity of the reflected light B2 and the time of change in the rolling direction (the time between two peaks).
  • the rolling direction detection unit 125 since the rolling direction detection unit 125 only needs to be configured to irradiate the irradiation light B1 from the light emitting unit 126 to the irradiation target surface Cs and to receive the reflected light B2 from the light receiving unit 127, there is no need to use an expensive high-precision camera or the like, and an inexpensive commercially available product such as a laser sensor can be used, which makes it possible to suppress cost increases and improve maintainability.
  • the angles of the optical axes B1c, B2c of the irradiated light B1 and the reflected light B2 with the irradiated surface Cs are such that at least one of the incident angle B1d of the optical axis B1c of the irradiated light B1 and the reflection angle B2d of the optical axis B2c of the reflected light B2 is other than 0 degrees, since if both are 0 degrees, there will be no change in the intensity of the reflected light B2 depending on the rolling direction of the molded product C.
  • the incident angle B1d of the optical axis B1c of the irradiation light B1 is between 5 degrees and 15 degrees, in order that the light receiving unit 127 can receive the reflected light B2 to an extent that the change in intensity of the reflected light B2 can be sufficiently confirmed.
  • the distance T between the rolling direction detection unit 125 and the irradiation target surface Cs be 100 mm or more and 200 mm or less, because this allows the light receiving unit 127 to receive reflected light B2 to a degree that allows the change in intensity of the reflected light B2 to be sufficiently confirmed.
  • the liquid injection unit 130 stops injecting the liquid after a predetermined time has elapsed since the start of liquid injection (step 5), and the control unit (not shown) determines whether or not the injection of liquid by the liquid injection unit 130 has been completed normally based on the information of the continuous change in the intensity of the reflected light B2 transmitted from the rolling direction detection unit 125 (step 6). Specifically, it is possible to make a judgment by determining whether the rotation speed of the molded product C is within the range of normal rotation speeds based on information on the change in intensity of the reflected light B2, but the judgment criterion is not limited to the rotation speed of the molded product C; for example, the judgment criterion may be whether the molded product C has rotated a predetermined angle.
  • the control unit determines that the molded product C is a normal product (step 6), rotates the turret 110 to move the rotating holding section 122 to the molded product discharge section (not shown), and transports the molded product C from the regular discharge path (not shown) to the next process downstream (step 7), and the molded product receiving section (not shown) accepts the newly transported molded product C from upstream into the rotating holding section 122 (step 2).
  • the control unit determines that the molded product C is an error product (step 6), rotates the turret 110 to move the rotating holding section 122 to the molded product discharge section (not shown), stops the acceptance of newly transported molded products C from upstream at the molded product receiving section (not shown) (step 8), discharges the molded product C from the error discharge path (not shown) outside the molded product inspection device 100 (step 9), and stops the molded product inspection device 100 (step 10).
  • Table 1 showing the change in intensity of reflected light B2 received by the light receiving unit 127 of the rolling direction detection unit 125.
  • the horizontal axis represents the elapsed time
  • the vertical axis represents the intensity of the reflected light B2 received by the light receiving unit 127.
  • the rotation speed of the molded product C can be easily determined from the time required for half a rotation from P1 to P2. Since P1 is reached at 12 msec and P2 is reached at 54 msec, it is understood that the time for molded product C to make half a rotation is 42 msec and that it completes one rotation in 84 msec. If the rotation of the molded product C is unstable, the variation in the time between peaks in the intensity of the reflected light B2 will increase, making it easy for a control unit (not shown) to detect the occurrence of an abnormality.
  • a control unit (not shown) can determine the time it takes for molded product C to make half a rotation from the arrival times of P1 and P2 by the time when the injection of the liquid ends (90 msec), and it is possible to confirm the rotation speed during the injection of the liquid, thereby enabling a stable improvement in production speed.
  • the molded product is held in the rotating holding section and is configured to be movable by a turret to the molded product receiving section, the coating area, and the molded product discharge section.
  • the method of moving the molded product is not limited to this.
  • the molded product receiving section, the coating area, and the molded product discharge section may be arranged from upstream to downstream on the conveyor, and the molded product transported on the conveyor may be held in the rotating holding section arranged in the coating area.
  • the molded product is described as having the rotational force transmitted thereto by a rotation transmission belt, but the method of transmitting rotation to the molded product is not limited to this, and the rotation may be transmitted by, for example, a roller.
  • control unit has been described as discharging the erroneous molded product from the error discharge section when an error product occurs, stopping the supply of molded products to the molded product receiving section, and stopping the molded product confirmation device.
  • the operation of the control unit is not limited to this, and for example, it is not necessary to stop the supply of molded products to the molded product receiving section or the rolling direction detection section, and the molded product confirmation device may be stopped only when error products occur consecutively.
  • the coating liquid is sprayed from the liquid spraying section onto the bottom of the molded product, but the type of material and the spraying location are not limited to this, and for example, cleaning liquid, lubricant, cooling water, pressurized air, etc. may be sprayed onto the body or inside of the molded product.
  • the molded product has been described as having a bottomed cylindrical shape, but the shape of the molded product is not limited to this and may be, for example, a blank plate punched out of a rolled metal plate, a can lid, etc.
  • the rolling direction detection unit has been described as irradiating the irradiated light onto the bottom of the molded product, but the irradiated surface of the irradiated light is not limited to this, and can be applied to any surface having a metallic luster, such as a flange portion, a body portion, or a plate portion.
  • the rotation confirmation device has been described as including a configuration for spraying liquid while rotating the molded product, but the configuration of the rotation confirmation device is not limited to this, and for example, the configuration of the rotation confirmation device may include an alignment device that aligns the rolling directions of multiple molded products.
  • the rolling direction is identified by detecting a peak in Table 1, but it is also possible to set a certain threshold value (for example, 4500 in Table 1) and identify the approximate rolling direction when the intensity value of the reflected light exceeds this threshold value.
  • a rotation angle sensor on the rotation holding section to detect the rotation angle of the molded product, and to control the rotation angle and rolling direction of the molded product from the rolling direction identified from the relationship between the continuous changes in the intensity of the reflected light and the output of the rotation angle sensor.
  • Molded product inspection device 110 Turret 120: Molded product rotation unit 121: Rotation transmission belt 122: Rotation holding section 123: Pocket 124: Roller 125: Rolling direction detection section 126: Light emitting section 127: Light receiving section 130: Liquid injection section C: Molded product Cm: Body section Cb: Bottom section Cs: Irradiation target surface Ct: Rolling mark Ct1: Rolling mark crest Ct2: Rolling mark valley Ct3: Connection surface between crest and valley of rolling mark S: Coating area B1: Irradiated light B2: Reflected light B1c: Optical axis of irradiated light B2c: Optical axis of reflected light B1d: Incident angle of irradiated light B2d: Reflection angle of reflected light T: Distance from the rolling direction detector to the surface to be irradiated

Abstract

Provided is a molded article rotation confirmation device that is capable, using a simple configuration, of specifying the rolling direction, the rotation speed, and the rotation angle (number of rotations) for a molded article even when the molded article is without markings or the like, and that is capable of suppressing an increase in the number of processes and in the production time, and an increase in cost.　A molded article confirmation device (100) comprises: a molded article rotation unit (120) provided with a rotation holding part (122) for rotatably holding a metal molded article (C) formed from a rolling metal plate and a rolling direction detection part (125) for detecting the rolling direction of the metal molded article (C); and a control unit. The rolling direction detection part (125) has a light-emitting part (126) that projects irradiation light (B1) onto an irradiation target surface (Cs) and a light-receiving part (127) that receives reflected light (B2) reflected from the irradiation target surface (Cs). The light-emitting part (126) projects the irradiation light (B1) at a predetermined incident angle onto the irradiation target surface (Cs), and the control unit is configured to enable detection of the rolling direction of the metal molded article (C) on the basis of information regarding continuous changes in intensity of the reflected light (B2).

Description

成形品確認装置Molded product inspection device
　本発明は、圧延金属板から成形した成形品を取り扱う成形品確認装置に関する。 The present invention relates to a molded product inspection device that handles molded products made from rolled metal sheets.
　従来、容器（成形品）の表面や内面に塗料等を塗布する工程において、容器（成形品）を把持して回転させながら塗料を噴射する装置が、特許文献１等で公知である。
　この特許文献１に記載のスプレー塗装システムの成形品確認装置（材料塗布装置１０）は、成形品（ワークピースＷ）の表面へ材料を塗布するものであり、回転保持部（缶回転駆動機構１２）の一部である、成形品を保持するワークピースホルダを有している。 2. Description of the Related Art Conventionally, in a process for applying paint or the like to the surface or inner surface of a container (molded product), an apparatus for spraying paint while gripping and rotating the container (molded product) is known, for example from Patent Document 1.
The molded product inspection device (material application device 10) of the spray painting system described in Patent Document 1 applies material to the surface of a molded product (workpiece W) and has a workpiece holder that holds the molded product, which is part of the rotating holding section (can rotation drive mechanism 12).
　回転保持部（缶回転駆動機構１２）は、星形のホイールを使用して複数の成形品（ワークピースＷ）を保持することができ、駆動ベルトやホイール等の装置によって、成形品（ワークピースＷ）の中心軸を回転中心として回転することができるものである。
　また、成形品確認装置（材料塗布装置１０）には、液体噴射部（材料塗布機構１４）が設けられ、制御ユニット（制御機構１８）によって材料塗布のオン／オフを制御している。 The rotary holding section (can rotation drive mechanism 12) can hold multiple molded products (workpieces W) using star-shaped wheels, and can rotate the molded products (workpieces W) around their central axes using devices such as drive belts and wheels.
The molded product inspection device (material application device 10) is provided with a liquid injection section (material application mechanism 14), and the material application is controlled to be turned on and off by a control unit (control mechanism 18).
　さらに、成形品確認装置（材料塗布装置１０）には、圧延方向検出部（速度検出器ないしセンサ２２）が設けられており、成形品（ワークピースＷ）上にある目印等を検出し、制御ユニット（制御機構１８）に信号を送信する。
　制御ユニット（制御機構１８）は、圧延方向検出部（速度検出器ないしセンサ２２）から受信した信号を基に、成形品（ワークピースＷ）の回転速度の決定や、材料塗布のオン／オフを制御することで、余分なコーティングを最小にするとともに、スプレーポケット内に成形品（ワークピースＷ）が滞在する時間を短縮しようとするものである。 Furthermore, the molded product inspection device (material application device 10) is provided with a rolling direction detection section (speed detector or sensor 22) which detects marks, etc. on the molded product (workpiece W) and transmits a signal to the control unit (control mechanism 18).
The control unit (control mechanism 18) determines the rotation speed of the molded product (workpiece W) and controls the on/off of material application based on the signal received from the rolling direction detection section (speed detector or sensor 22), thereby minimizing excess coating and shortening the time the molded product (workpiece W) spends in the spray pocket.
特表２００５－５２５２３６号公報JP 2005-525236 A
　しかしながら、上記特許文献で公知の成形品確認装置は、未だ改善の余地があった。 However, there is still room for improvement in the molded product inspection device known from the above patent document.
　すなわち、特許文献１で公知の成形品確認装置は、成形品の表面に設けた複数の目印を検出することで成形品の回転速度を特定するため、例えば、印刷などが施されていない無地の成形品等の目印のない箇所から容器（成形品）の回転速度を特定できない虞があった。
　また、無印刷の成形品にシール等を貼り付けて目印を付けることも考えられるが、シールの貼り付けや取り外しに必要な作業工程数の増加等、コストアップしてしまう虞があった。 In other words, the molded product inspection device known from Patent Document 1 determines the rotation speed of a molded product by detecting multiple markings on the surface of the molded product, and therefore there was a risk that the rotation speed of a container (molded product) could not be determined from a location without markings, such as a plain molded product that is not printed on, for example.
It is also possible to mark unprinted molded products with stickers or the like, but this would increase the number of work steps required for attaching and removing the stickers, which could result in increased costs.
　また、特許文献１で公知の成形品確認装置は、成形品の回転を目印で確認した後で材料の塗布作業を開始するため、材料の塗布作業自体を開始するまでに時間がかかってしまい、１製品あたりの生産時間が増加してしまう虞があった。 In addition, the molded product inspection device known from Patent Document 1 begins the material application process after checking the rotation of the molded product with a marker, so it takes time before the material application process itself can begin, which could increase the production time per product.
　本発明はこれらの問題点を解決するものであり、簡単な構成で、目印等がついていない成形品でも成形品の圧延方向や回転速度、回転角度（回転回数）を特定でき、工程数や生産時間の増加や、コストアップを抑制可能な成形品確認装置を提供することを目的とするものである。 The present invention aims to solve these problems by providing a molded product inspection device that can identify the rolling direction, rotation speed, and rotation angle (number of rotations) of molded products with a simple configuration, even for molded products that do not have markings, and that can prevent increases in the number of processes and production time, as well as increases in costs.
　本発明の成形品回転確認装置は、圧延金属板から成形した金属成形品を回転可能に保持する回転保持部および前記回転保持部に保持された金属成形品の圧延方向を検出する圧延方向検出部が設けられた成形品回転ユニットと、前記成形品回転ユニットの動作を制御する制御ユニットとを有した成形品確認装置であって、前記圧延方向検出部は、前記回転保持部に保持された金属成形品の表面である金属光沢を有した照射対象面に照射光を照射する発光部と、前記発光部からの照射光のうち、照射対象面から反射した反射光を受光する受光部とを有し、前記発光部は、照射対象面に対して、垂直方向から所定の入射角度で照射光を照射し、前記制御ユニットは、前記圧延方向検出部から受け取った前記受光部が受光した反射光の強度の連続的な変化情報を基に、前記回転保持部に保持された金属成形品の圧延方向を検出可能に構成されていることにより、前記課題を解決するものである。 The molded product rotation confirmation device of the present invention is a molded product confirmation device having a molded product rotation unit provided with a rotating holding unit that rotatably holds a metal molded product formed from a rolled metal plate and a rolling direction detection unit that detects the rolling direction of the metal molded product held in the rotating holding unit, and a control unit that controls the operation of the molded product rotation unit, in which the rolling direction detection unit has a light emitting unit that irradiates light onto an irradiation target surface having a metallic luster, which is the surface of the metal molded product held in the rotating holding unit, and a light receiving unit that receives light reflected from the irradiation target surface from the irradiation light emitting unit, the light emitting unit irradiates the irradiation target surface with light at a predetermined incident angle from a vertical direction, and the control unit is configured to be able to detect the rolling direction of the metal molded product held in the rotating holding unit based on continuous change information of the intensity of the reflected light received by the light receiving unit received from the rolling direction detection unit, thereby solving the above problem.
　請求項１に係る成形品確認装置は、圧延金属板から成形した金属成形品の照射対象面からの反射光を圧延方向検出部で確認して、制御ユニットで成形品回転ユニットを制御するため、金属成形品の表面に残った、圧延時に発生する圧延方向に延びるように形成された細かい凹凸（圧延目）に発光部からの照射光を照射し、その反射光を受光することで、金属成形品の回転に伴って向きが変わる圧延目からの反射光の強度の連続的な変化を圧延方向検出部で検出することができる。
　これによって、目印を付けていない金属成形品であっても、圧延方向検出部が確認した反射光の強度の連続的な変化を基に制御ユニットが金属成形品の圧延方向を検出することができる。
　また、制御ユニットが圧延方向検出部から金属成形品の回転に伴う反射光の強度の連続的な変化情報を得ることで、金属成形品の回転を捉えることもでき、金属成形品の圧延方向や回転速度、回転角度（回転回数）の情報を基に、成形品回転ユニットの動作を制御することもできる。 The molded product inspection device of claim 1 uses a rolling direction detection unit to confirm reflected light from the irradiated surface of a metal molded product formed from a rolled metal plate, and controls the molded product rotation unit with a control unit.Therefore, by irradiating light from the light emitting unit onto fine irregularities (rolling marks) that are generated during rolling and remain on the surface of the metal molded product and extend in the rolling direction, and receiving the reflected light, the rolling direction detection unit can detect continuous changes in the intensity of reflected light from the rolling marks, whose direction changes as the metal molded product rotates.
This allows the control unit to detect the rolling direction of a metal molded product, even if it is not marked, based on the continuous changes in the intensity of the reflected light confirmed by the rolling direction detection section.
In addition, the control unit can capture the rotation of the metal molded product by obtaining information on continuous changes in the intensity of reflected light that accompanies the rotation of the metal molded product from the rolling direction detection unit, and can also control the operation of the molded product rotation unit based on information on the rolling direction, rotation speed, and rotation angle (number of rotations) of the metal molded product.
　請求項２に記載の構成によれば、発光部は、照射対象面（圧延目）に対して、垂直方向から５度以上１５度以下の入射角度で照射光を照射するため、照射対象面（圧延目）からの反射光の強度の連続的な変化をより正確に捉えることができ、より確実に目印を付けていない金属成形品の圧延方向を圧延方向検出部が検出することができる。
　請求項３に記載の構成によれば、圧延方向検出部は、照射対象面（圧延目）に対して、１００ｍｍ以上２００ｍｍ以下の距離に配置されているため、照射対象面（圧延目）からの反射光を大きく減衰されることなく受光部で確実に受光でき、より一層確実に金属成形品の圧延方向を圧延方向検出部が検出することができる。 According to the configuration described in claim 2, the light emitting unit irradiates the irradiation surface (rolling mark) with light at an incident angle of 5 degrees or more and 15 degrees or less from the vertical direction, so that the continuous change in the intensity of the reflected light from the irradiation surface (rolling mark) can be captured more accurately, and the rolling direction detection unit can more reliably detect the rolling direction of a metal molded product that does not have a mark.
According to the configuration described in claim 3, the rolling direction detection unit is positioned at a distance of 100 mm or more and 200 mm or less from the irradiated surface (rolling mark). Therefore, the reflected light from the irradiated surface (rolling mark) can be reliably received by the light receiving unit without being significantly attenuated, and the rolling direction detection unit can detect the rolling direction of the metal molded product more reliably.
　請求項４に記載の構成によれば、制御ユニットは、圧延方向検出部から受け取った受光部が受光した反射光の強度の連続的な変化情報を基に、回転保持部に保持された金属成形品の圧延方向の変化時間から回転速度を算出可能に構成されているため、制御ユニットが金属成形品の回転速度の変化をより一層詳細に捉えることができ、例えば、金属成形品回転時にスリップが発生した場合等の状況をより正確に制御ユニットが把握して、回転保持部の状況に応じて成形品回転ユニットの動作を適切に制御することができる。
　請求項５に記載の構成によれば、成形品排出部は、正規排出路と、エラー排出路とを有し、制御ユニットは、算出した回転保持部に保持された金属成形品の回転速度を基に、回転ユニットから排出される金属成形品を正規排出路とエラー排出路のいずれかから排出するように成形品排出部に指示するため、例えば、金属成形品に施した作業が正常に完了した正常品であるか正常に完了できなかったエラー品であるかを金属成形品の回転速度の情報から制御ユニットが判別し、正規排出路およびエラー排出路に確実に分けて排出することができる。 According to the configuration described in claim 4, the control unit is configured to be able to calculate the rotational speed from the time of change in the rolling direction of the metal molded product held in the rotating holding unit based on the information of continuous changes in the intensity of the reflected light received by the light receiving unit received from the rolling direction detection unit.This allows the control unit to capture changes in the rotational speed of the metal molded product in more detail, and the control unit can more accurately grasp situations such as when slippage occurs during rotation of the metal molded product, and appropriately control the operation of the molded product rotation unit according to the situation of the rotating holding unit.
According to the configuration described in claim 5, the molded product discharge section has a normal discharge path and an error discharge path, and the control unit instructs the molded product discharge section to discharge the metal molded product discharged from the rotating unit from either the normal discharge path or the error discharge path based on the calculated rotational speed of the metal molded product held in the rotating holding section.Therefore, for example, the control unit can determine from information on the rotational speed of the metal molded product whether it is a normal product in which the work performed on the metal molded product was completed normally, or an error product in which the work was not completed normally, and can reliably discharge the metal molded product into the normal discharge path and the error discharge path.
　請求項６に記載の構成によれば、成形品回転ユニットには、回転保持部に保持された金属成形品の回転中に、金属成形品に向けて液体を噴射する液体噴射部を有するため、金属成形品表面に十分に液体を噴射できたか否かを、金属成形品の回転速度の情報から制御ユニットが判別することができる。
　これによって、成形品回転ユニット内での作業が正常に完了したか否かを金属成形品の回転速度の情報から制御ユニットが容易に判別することができるため、例えば、成形品回転ユニット内での液体噴射部による液体の噴射時間や金属成形品を回転させる時間を一定値に固定した場合でも、金属成形品への液体の塗布の回転角度（塗布範囲）を一定に保って安定して成形品を供給・生産できる。
　請求項７に記載の構成によれば、制御ユニットは、算出した回転保持部に保持された金属成形品の回転速度を基に、液体噴射部からの液体の噴射開始および噴射終了を制御可能に構成されているため、金属成形品の回転速度の変化に伴って液体噴射部からの液体の噴射時間を制御ユニットが常に調整することができ、確実に液体を金属成形品に必要量塗布することができる。 According to the configuration described in claim 6, the molded product rotation unit has a liquid injection section that injects liquid toward the metal molded product while the metal molded product held in the rotating holding section is rotating, so that the control unit can determine whether or not sufficient liquid has been injected onto the surface of the metal molded product from information on the rotation speed of the metal molded product.
This allows the control unit to easily determine whether or not work within the molded product rotation unit has been completed successfully from information on the rotation speed of the metal molded product. Therefore, even if, for example, the time for which liquid is sprayed by the liquid spray section within the molded product rotation unit or the time for which the metal molded product is rotated is fixed to a constant value, the rotation angle (application range) for applying liquid to the metal molded product can be kept constant, allowing for stable supply and production of molded products.
According to the configuration described in claim 7, the control unit is configured to control the start and end of liquid spray from the liquid spray section based on the calculated rotational speed of the metal molded product held in the rotating holding section, so that the control unit can always adjust the spray time of liquid from the liquid spray section in accordance with changes in the rotational speed of the metal molded product, and can reliably apply the required amount of liquid to the metal molded product.
　請求項８に記載の構成によれば、圧延方向検出部は、反射型レーザセンサで構成されているため、安価で調達の容易な製品を使用して装置を構成することができ、装置のコストアップを抑制できる。
　請求項９に記載の構成によれば、回転保持手段で保持した圧延金属板から成形した金属成形品の照射対象面からの反射光を圧延方向検出手段で確認するため、金属成形品の表面に残った、圧延時に発生する圧延方向に延びるように形成された細かい凹凸（圧延目）に照射光を照射し、その反射光を受光することで、金属成形品の回転に伴って向きが変わる圧延目からの反射光の強度の連続的な変化を確認することができる。
　これによって、目印を付けていない金属成形品であっても、圧延方向検出手段で確認した反射光の強度の連続的な変化を基に金属成形品の圧延方向を捉えることができる。
　また、圧延方向検出手段によって金属成形品の回転に伴う反射光の強度の連続的な変化情報を得ることで、金属成形品の回転を捉えることもできるため、金属成形品の圧延方向や回転速度、回転角度（回転回数）の情報を基に、例えば、回転保持手段による金属成形品の保持や回転等の取り扱いを制御することもできる。 According to the configuration of claim 8, since the rolling direction detection unit is composed of a reflective laser sensor, the device can be constructed using inexpensive and easily procured products, and an increase in the cost of the device can be suppressed.
According to the configuration described in claim 9, the reflected light from the irradiated surface of the metal molded product formed from the rolled metal plate held by the rotating and holding means is confirmed by the rolling direction detection means. In order to confirm this, the irradiated light is directed at the fine irregularities (rolling marks) remaining on the surface of the metal molded product that are generated during rolling and extend in the rolling direction, and the reflected light is received, thereby making it possible to confirm the continuous change in the intensity of the reflected light from the rolling marks, whose direction changes as the metal molded product rotates.
As a result, even if the metal formed product is not marked, the rolling direction of the metal formed product can be detected based on the continuous change in the intensity of the reflected light confirmed by the rolling direction detection means.
In addition, the rolling direction detection means can obtain information on continuous changes in the intensity of reflected light that accompanies the rotation of the metal molded product, thereby enabling the rotation of the metal molded product to be captured. Therefore, based on information on the rolling direction, rotation speed, and rotation angle (number of rotations) of the metal molded product, it is possible to control, for example, the handling of the metal molded product, such as holding and rotation, by the rotating and holding means.
本発明の一実施形態に係る成形品確認装置１００の正面模式図。1 is a schematic front view of a molded product inspection device 100 according to an embodiment of the present invention. 本発明の一実施形態に係る成形品確認装置１００の、塗布領域Ｓの側面模式断面図。2 is a schematic cross-sectional side view of a coating area S of the molded product inspection device 100 according to one embodiment of the present invention. FIG. 本発明の一実施形態に係る成形品確認装置１００の、回転する成形品Ｃに圧延方向検出部１２５から照射光Ｂ１を照射した状態１を示す模式図。1 is a schematic diagram showing a state 1 in which irradiation light B1 is irradiated from a rolling direction detection unit 125 onto a rotating molded product C in a molded product inspection device 100 according to an embodiment of the present invention. FIG. 本発明の一実施形態に係る成形品確認装置１００の、状態１において照射対象面Ｃｓに圧延方向検出部１２５から照射した照射光Ｂ１および照射対象面Ｃｓから反射した反射光Ｂ２の様子を示す模式図。Schematic diagram showing the appearance of irradiated light B1 irradiated from the rolling direction detection unit 125 to the irradiation target surface Cs and reflected light B2 reflected from the irradiation target surface Cs in state 1 of the molded product inspection device 100 according to one embodiment of the present invention. 本発明の一実施形態に係る成形品回転確認装置１００の、回転する成形品Ｃに圧延方向検出部１２５から照射光Ｂ１を照射した状態２を示す模式図。1 is a schematic diagram showing a state 2 in which the rotating molded product C is irradiated with irradiation light B1 from a rolling direction detection unit 125 in the molded product rotation confirmation device 100 according to one embodiment of the present invention. FIG. 本発明の一実施形態に係る成形品確認装置１００の、状態２において照射対象面Ｃｓに圧延方向検出部１２５から照射した照射光Ｂ１および照射対象面Ｃｓから反射した反射光Ｂ２の様子を示す模式図。Schematic diagram showing the state of irradiated light B1 irradiated from the rolling direction detection unit 125 to the irradiation target surface Cs and the reflected light B2 reflected from the irradiation target surface Cs in state 2 of the molded product inspection device 100 according to one embodiment of the present invention. 本発明の一実施形態に係る成形品確認装置１００の、圧延方向検出部１２５と照射対象面Ｃｓとの位置関係を示す模式図。1 is a schematic diagram showing the positional relationship between a rolling direction detection unit 125 and an irradiation target surface Cs of a molded product inspection device 100 according to an embodiment of the present invention. FIG. 本発明の一実施形態に係る成形品確認装置１００の、成形品Ｃの回転を検出する一連の動作の流れを示すフローチャート。4 is a flowchart showing a flow of a series of operations for detecting rotation of a molded product C by the molded product inspection device 100 according to one embodiment of the present invention.
　以下に、本発明の一実施形態に係る成形品確認装置１００について、図面に基づいて説明する。
　なお、説明のため、図面には成形品受入部、制御ユニット、成形品排出部を図示しない。 Hereinafter, a molded product inspection device 100 according to an embodiment of the present invention will be described with reference to the drawings.
For the sake of explanation, the molded product receiving section, the control unit, and the molded product discharging section are not shown in the drawings.
　本発明の一実施形態に係る成形品確認装置１００は、図１および図２に示すように、圧延金属板から成形した金属成形品である成形品Ｃを取り扱うものであり、ターレット１１０上の成形品回転ユニット１２０の回転保持部１２２へ上流の工程から成形品Ｃを受け入れる成形品受入部（図示しない）と、成形品回転ユニット１２０の回転保持部１２２から下流の工程へ成形品Ｃを排出する成形品排出部（図示しない）と、成形品受入部（図示しない）および成形品排出部（図示しない）を含む成形品回転ユニット１２０の動作を制御する制御ユニット（図示しない）とを有している。 As shown in Figures 1 and 2, the molded product inspection device 100 according to one embodiment of the present invention handles molded product C, which is a metal molded product formed from a rolled metal plate, and has a molded product receiving section (not shown) that receives molded product C from an upstream process to the rotating holding section 122 of the molded product rotation unit 120 on the turret 110, a molded product discharge section (not shown) that discharges molded product C from the rotating holding section 122 of the molded product rotation unit 120 to a downstream process, and a control unit (not shown) that controls the operation of the molded product rotation unit 120 including the molded product receiving section (not shown) and the molded product discharge section (not shown).
　成形品回転ユニット１２０は、成形品受入部（図示しない）で成形品Ｃをポケット１２３内で回転可能に保持し塗布領域Ｓを経由して成形品排出部（図示しない）へ搬送する回転保持部１２２と、塗布領域Ｓで成形品Ｃに回転力を伝達する回転伝達ベルト１２１と、塗布領域Ｓで成形品Ｃの回転を捉えるために必要な圧延方向を検出する圧延方向検出部１２５と、塗布領域Ｓで回転している成形品Ｃの任意の位置にコーティング用の液体（塗料）を噴射する液体噴射部１３０とを有している。
　なお、本実施形態では、液体噴射部１３０は成形品Ｃの底部Ｃｂにコーティング用の液体を噴射するものとして説明する。 The molded product rotation unit 120 has a rotation holding section 122 that rotatably holds the molded product C in a pocket 123 in a molded product receiving section (not shown) and transports it to a molded product discharge section (not shown) via a coating area S, a rotation transmission belt 121 that transmits rotational force to the molded product C in the coating area S, a rolling direction detection section 125 that detects the rolling direction required to capture the rotation of the molded product C in the coating area S, and a liquid injection section 130 that sprays coating liquid (paint) at any position on the molded product C rotating in the coating area S.
In this embodiment, the liquid jetting unit 130 will be described as jetting the coating liquid onto the bottom portion Cb of the molded product C.
　回転保持部１２２には、成形品Ｃを受け入れ保持するポケット１２３と、ポケット１２３内に受け入れた成形品Ｃの胴部Ｃｍを回転可能に支持するローラ１２４が設けられている。
　圧延方向検出部１２５は、成形品Ｃの底部Ｃｂの任意の箇所である照射対象面Ｃｓに照射光Ｂ１を照射する発光部１２６と、照射対象面Ｃｓに反射した照射光Ｂ１の反射光Ｂ２を受光する受光部１２７とを有し、制御ユニット（図示しない）に反射光Ｂ２の強度の連続的な変化情報を伝達可能に構成されている。
　また、成形品Ｃの少なくとも底部Ｃｂは圧延金属板の金属光沢面が露出している。
　または、透明な塗料・インクや透明樹脂など、金属光沢面への照射光Ｂ１や金属光沢面からの反射光Ｂ２を遮らないものであれば、圧延金属板や成形品Ｃの表面が覆われていてもよい。
　なお、成形品Ｃは金属光沢を有する圧延金属板であれば材質は限定されず、例えば、アルミニウム板や鋼板等を使用できる。 The rotary holder 122 is provided with a pocket 123 for receiving and holding the molded product C, and rollers 124 for rotatably supporting the body portion Cm of the molded product C received in the pocket 123.
The rolling direction detection unit 125 has an emitter 126 that emits irradiation light B1 onto an irradiation target surface Cs, which is any location on the bottom Cb of the molded product C, and a light receiver 127 that receives reflected light B2 of the irradiation light B1 reflected by the irradiation target surface Cs, and is configured to be able to transmit information on continuous changes in the intensity of the reflected light B2 to a control unit (not shown).
At least the bottom portion Cb of the molded product C has the metallic gloss surface of the rolled metal plate exposed.
Alternatively, the surface of the rolled metal plate or molded product C may be covered with a transparent paint, ink, transparent resin, or the like, as long as it does not block the light B1 irradiated onto the glossy metal surface or the light B2 reflected from the glossy metal surface.
The material of the molded product C is not limited as long as it is a rolled metal plate having a metallic luster. For example, an aluminum plate or a steel plate can be used.
　次に、本発明の一実施形態に係る成形品確認装置１００による、成形品Ｃの底部Ｃｂへのコーティング用の液体の塗布工程について、図１乃至図８を用いて説明する。 Next, the process of applying a coating liquid to the bottom Cb of a molded product C using a molded product inspection device 100 according to one embodiment of the present invention will be described with reference to Figures 1 to 8.
　まず、成形品確認装置１００を起動し、図１に示すように、上流の工程から搬送されてきた成形品Ｃを、成形品回転ユニット１２０の成形品受入部（図示しない）へ供給し（手順１）、ターレット１１０に設けられた回転保持部１２２に受け入れる（手順２）。
　成形品Ｃは、回転保持部１２２のポケット１２３内に案内され、ローラ１２４で成形品Ｃの中心軸を回転中心として回転可能に胴部Ｃｍを支持される。 First, the molded product inspection device 100 is started, and as shown in FIG. 1, the molded product C transported from an upstream process is supplied to the molded product receiving section (not shown) of the molded product rotation unit 120 (step 1), and is then received by the rotating holding section 122 provided on the turret 110 (step 2).
The molded product C is guided into a pocket 123 of the rotary holder 122, and the body portion Cm is supported by rollers 124 so as to be rotatable about the central axis of the molded product C as the center of rotation.
　回転保持部１２２に保持された成形品Ｃは、図２に示すように、ターレット１１０の回転によって塗布領域Ｓへ搬送される（手順２）。
　このとき、成形品Ｃは回転伝達ベルト１２１とローラ１２４に挟まれるように位置し、回転伝達ベルト１２１によって回転力を伝達されて回転を開始する（手順３）。 The molded product C held by the rotary holder 122 is transported to the coating area S by the rotation of the turret 110 as shown in FIG. 2 (step 2).
At this time, the molded product C is positioned so as to be sandwiched between the rotation transmission belt 121 and the roller 124, and starts to rotate as the rotation force is transmitted by the rotation transmission belt 121 (step 3).
　また、成形品Ｃの回転開始から回転が安定するまでの想定時間経過後、液体噴射部１３０がコーティング用の液体を成形品Ｃの底部Ｃｂに所定の時間噴射を始めるとともに、圧延方向検出部１２５の発光部１２６から、照射対象面Ｃｓに所定の角度で照射光Ｂ１の照射を開始し、成形品の回転確認を開始する（手順４）。
　なお、照射対象面Ｃｓは、成形品Ｃの底部Ｃｂの回転に関係なく、発光部１２６から照射した照射光Ｂ１が成形品Ｃの底部Ｃｂに到達した箇所のことである。 In addition, after the expected time has elapsed from the start of rotation of the molded product C until the rotation stabilizes, the liquid injection unit 130 begins to inject the coating liquid onto the bottom Cb of the molded product C for a predetermined period of time, and the light emitting unit 126 of the rolling direction detection unit 125 begins to irradiate the irradiation target surface Cs with irradiation light B1 at a predetermined angle, thereby starting to check the rotation of the molded product (step 4).
The irradiation target surface Cs is the location at which the irradiation light B1 emitted from the light emitting unit 126 reaches the bottom Cb of the molded product C, regardless of the rotation of the bottom Cb of the molded product C.
　照射対象面Ｃｓに到達した照射光Ｂ１は反射して反射光Ｂ２となるが、照射対象面Ｃｓの状態によって反射光Ｂ２は拡散するため、反射光Ｂ２の一部のみを受光部１２７が受光する。
　すなわち、回転している成形品Ｃに対して所定の角度で照射光Ｂ１を照射すると、成形品Ｃの回転に伴って照射対象面Ｃｓの状態が変化するため、受光部１２７で受光できる反射光Ｂ２の強度も変化する。 The irradiation light B1 that reaches the irradiation target surface Cs is reflected and becomes reflected light B2. However, since the reflected light B2 is diffused depending on the state of the irradiation target surface Cs, the light receiving section 127 receives only a portion of the reflected light B2.
In other words, when irradiation light B1 is irradiated at a predetermined angle onto a rotating molded product C, the state of the irradiation target surface Cs changes as the molded product C rotates, and the intensity of the reflected light B2 that can be received by the light receiving unit 127 also changes.
　次に、成形品Ｃが回転している時の照射対象面Ｃｓの状態と照射光Ｂ１および反射光Ｂ２について、図３乃至図７を用いて説明する。 Next, the state of the irradiation target surface Cs when the molded product C is rotating, and the irradiated light B1 and reflected light B2 will be explained using Figures 3 to 7.
　ここで、状態１および状態２は成形品Ｃの回転中の所定の状態を示し、状態１における成形品Ｃの回転角度を０度とすると、状態２における成形品Ｃの回転角度は９０度である。
　なお、成形品Ｃは圧延金属板から成形されているため、底部Ｃｂには圧延方向に延びる細かい凹凸（圧延目の山Ｃｔ１、圧延目の谷Ｃｔ２）である圧延目Ｃｔが無数に形成されている。 Here, state 1 and state 2 indicate predetermined states during rotation of molded product C, and if the rotation angle of molded product C in state 1 is 0 degrees, the rotation angle of molded product C in state 2 is 90 degrees.
In addition, since the formed product C is formed from a rolled metal plate, the bottom Cb has countless rolling marks Ct, which are fine irregularities (rolling mark peaks Ct1 and rolling mark valleys Ct2) extending in the rolling direction.
　図３に示すように、状態１では圧延目Ｃｔが縦方向に延びており、状態２では成形品Ｃが状態１から９０度回転した状態であることから、図５に示すように、圧延目Ｃｔが横方向に延びている。
　状態１において、図４に示すように、照射光Ｂ１は照射対象面Ｃｓの圧延目Ｃｔに到達する。
　圧延目Ｃｔは縦方向に延びているため、照射光Ｂ１は圧延目Ｃｔの山Ｃｔ１から谷Ｃｔ２にかけて照射され、反射光Ｂ２は圧延目Ｃｔから様々な角度で拡散されるように照射対象面Ｃｓから反射される。
　このとき、圧延目Ｃｔは縦方向に延びていることから、図４に示すように照射光Ｂ１を圧延目Ｃｔの延びる向きと同じ方向に所定の入射角度Ｂ１ｄで照射すると、正反射の角度となる反射光Ｂ２の成分が多くなり、受光部１２７で受光できる反射光Ｂ２の拡散反射の成分は少なく、受光部１２７で受光した反射光Ｂ２の強度は小さくなる。 As shown in Figure 3, in state 1, the rolling marks Ct extend in the vertical direction, and in state 2, the molded product C is rotated 90 degrees from state 1, so that the rolling marks Ct extend in the horizontal direction, as shown in Figure 5.
In state 1, as shown in FIG. 4, the irradiation light B1 reaches the rolling grain Ct of the irradiation target surface Cs.
Since the rolling marks Ct extend in the vertical direction, the irradiated light B1 is irradiated from the peaks Ct1 to the valleys Ct2 of the rolling marks Ct, and the reflected light B2 is reflected from the irradiation target surface Cs so as to be diffused at various angles from the rolling marks Ct.
At this time, since the rolling marks Ct extend in the vertical direction, when the irradiation light B1 is irradiated in the same direction as the extension direction of the rolling marks Ct at a predetermined incident angle B1d as shown in FIG. 4, the component of the reflected light B2 that is at the angle of regular reflection increases, and the component of the reflected light B2 that can be received by the light receiving unit 127 that is diffuse reflection is small, and the intensity of the reflected light B2 received by the light receiving unit 127 becomes small.
　成形品Ｃを９０度回転して状態１から状態２に移行すると、図５に示すように、照射光Ｂ１は照射対象面Ｃｓの横方向に延びる圧延目Ｃｔに到達する。
　圧延目Ｃｔは横方向に延びているため、圧延目Ｃｔの山Ｃｔ１から谷Ｃｔ２にかけて照射された照射光Ｂ１は、図６に示すように、圧延目Ｃｔの山Ｃｔ１と谷Ｃｔ２との間の接続面Ｃｔ３から多く反射されるため、状態１に比べて拡散反射の成分が多くなり、多くの反射光Ｂ２を受光部１２７で受光することができ、受光部１２７で受光した反射光Ｂ２の強度は大きくなる。 When the molded product C is rotated 90 degrees to transition from state 1 to state 2, as shown in FIG. 5, the irradiated light B1 reaches the rolling marks Ct extending laterally on the irradiation target surface Cs.
Since the rolling eye Ct extends in the horizontal direction, the irradiated light B1 irradiated from the peak Ct1 to the valley Ct2 of the rolling eye Ct is reflected largely from the connection surface Ct3 between the peak Ct1 and the valley Ct2 of the rolling eye Ct, as shown in Figure 6. As a result, there is a greater amount of diffuse reflection component compared to state 1, and a greater amount of reflected light B2 can be received by the light receiving unit 127, and the intensity of the reflected light B2 received by the light receiving unit 127 becomes greater.
　成形品Ｃを状態２からさらに９０度回転（１８０度）させると状態１と同様に再び圧延目Ｃｔが縦方向に延びる向きになるため、受光部１２７で受光できる反射光Ｂ２は再び少なくなり、さらに９０度回転（２７０度）させると状態２と同様に再び圧延目Ｃｔが横方向に延びる向きになるため、受光部１２７で受光できる反射光Ｂ２は再び多くなる。
　すなわち、受光部１２７で受光する反射光Ｂ２の強度の連続的な変化は、成形品Ｃが1回転する間に角度０度（１８０度）での小さくなるピークと、角度９０度（２７０度）での大きくなるピークが周期的に２度発生することがわかる。 When the molded product C is rotated another 90 degrees (180 degrees) from state 2, the rolling marks Ct again extend vertically, as in state 1, and the amount of reflected light B2 that can be received by the light receiving unit 127 again decreases, and when the molded product C is rotated another 90 degrees (270 degrees), the rolling marks Ct again extend horizontally, as in state 2, and the amount of reflected light B2 that can be received by the light receiving unit 127 again increases.
In other words, it can be seen that the continuous change in intensity of the reflected light B2 received by the light receiving section 127 periodically occurs twice during one rotation of the molded product C, with a small peak at an angle of 0 degrees (180 degrees) and a large peak at an angle of 90 degrees (270 degrees).
　これによって、無地の成形品に印刷やシール等で目印をつけなくても、成形品Ｃの底部Ｃｂの圧延目Ｃｔに照射光を照射して受光部１２７で受光する反射光Ｂ２の強度の連続的な変化から成形品Ｃの圧延方向を圧延方向検出部１２５で検出でき、さらに反射光Ｂ２の強度の連続的な変化のピークの回数や圧延方向の変化時間（２つのピーク間の時間）を基に、制御ユニット（図示しない）で成形品Ｃの回転角度や回転速度を特定することができる。
　また、圧延方向検出部１２５は発光部１２６から照射光Ｂ１を照射対象面Ｃｓに照射し、反射光Ｂ２を受光部１２７から受光できる構成であればよいため、高価な高精度カメラ等を使用する必要がなく、例えば、レーザセンサ等の安価な市販品を使用することができ、コストアップの抑制や、メンテナンス性を向上することができる。 As a result, without marking a plain molded product with printing or a sticker, the rolling direction of the molded product C can be detected by the rolling direction detection unit 125 from the continuous change in intensity of the reflected light B2 received by the light receiving unit 127 when light is irradiated onto the rolling mark Ct of the bottom Cb of the molded product C. Furthermore, the control unit (not shown) can identify the rotation angle and rotation speed of the molded product C based on the number of peaks in the continuous change in intensity of the reflected light B2 and the time of change in the rolling direction (the time between two peaks).
In addition, since the rolling direction detection unit 125 only needs to be configured to irradiate the irradiation light B1 from the light emitting unit 126 to the irradiation target surface Cs and to receive the reflected light B2 from the light receiving unit 127, there is no need to use an expensive high-precision camera or the like, and an inexpensive commercially available product such as a laser sensor can be used, which makes it possible to suppress cost increases and improve maintainability.
　なお、図７に示すように、照射光Ｂ１および反射光Ｂ２の光軸Ｂ１ｃ、Ｂ２ｃの照射対象面Ｃｓとの角度は、照射光Ｂ１の光軸Ｂ１ｃの入射角度Ｂ１ｄと反射光Ｂ２の光軸Ｂ２ｃの反射角度Ｂ２ｄは、双方とも０度となると成形品Ｃの圧延方向による反射光Ｂ２の強度の変化が生じなくなるため、少なくともいずれか一方が０度以外となるように配置すればよい。
　照射光Ｂ１の光軸Ｂ１ｃの入射角度Ｂ１ｄが５度以上１５度以下とするのが受光部１２７で反射光Ｂ２の強度の変化を十分に確認可能な程度の反射光Ｂ２を受光できるため好適である。
　また、圧延方向検出部１２５と照射対象面Ｃｓとの距離Ｔは、１００ｍｍ以上２００ｍｍ以下とするのが受光部１２７で反射光Ｂ２の強度の変化を十分に確認可能な程度の反射光Ｂ２を受光できるため好適である。 As shown in Figure 7, the angles of the optical axes B1c, B2c of the irradiated light B1 and the reflected light B2 with the irradiated surface Cs are such that at least one of the incident angle B1d of the optical axis B1c of the irradiated light B1 and the reflection angle B2d of the optical axis B2c of the reflected light B2 is other than 0 degrees, since if both are 0 degrees, there will be no change in the intensity of the reflected light B2 depending on the rolling direction of the molded product C.
It is preferable that the incident angle B1d of the optical axis B1c of the irradiation light B1 is between 5 degrees and 15 degrees, in order that the light receiving unit 127 can receive the reflected light B2 to an extent that the change in intensity of the reflected light B2 can be sufficiently confirmed.
In addition, it is preferable that the distance T between the rolling direction detection unit 125 and the irradiation target surface Cs be 100 mm or more and 200 mm or less, because this allows the light receiving unit 127 to receive reflected light B2 to a degree that allows the change in intensity of the reflected light B2 to be sufficiently confirmed.
　液体噴射部１３０は液体の噴射開始から所定の時間経過後に液体の噴射を停止させ（手順５）、制御ユニット（図示しない）は、圧延方向検出部１２５から伝達された反射光Ｂ２の強度の連続的な変化の情報を基に、液体噴射部１３０による液体の噴射が正常に完了したか否かを判定する（手順６）。
　具体的には、反射光Ｂ２の強度の変化情報を基に、成形品Ｃの回転速度が正常な回転速度の範囲に収まっているかを判別することによる判定を実施することが考えられるが、判定基準は成形品Ｃの回転速度に限定されず、例えば、成形品Ｃが所定の角度回転したか否かを判定基準としてもよい。 The liquid injection unit 130 stops injecting the liquid after a predetermined time has elapsed since the start of liquid injection (step 5), and the control unit (not shown) determines whether or not the injection of liquid by the liquid injection unit 130 has been completed normally based on the information of the continuous change in the intensity of the reflected light B2 transmitted from the rolling direction detection unit 125 (step 6).
Specifically, it is possible to make a judgment by determining whether the rotation speed of the molded product C is within the range of normal rotation speeds based on information on the change in intensity of the reflected light B2, but the judgment criterion is not limited to the rotation speed of the molded product C; for example, the judgment criterion may be whether the molded product C has rotated a predetermined angle.
　液体噴射部１３０による液体の噴射が正常に完了した場合は、制御ユニット（図示しない）は成形品Ｃを正常品として判定する（手順６）とともに、ターレット１１０を回転して成形品排出部（図示しない）に回転保持部１２２を移動させ、成形品Ｃを正規排出路（図示しない）から下流の次工程へ搬出し（手順７）、成形品受入部（図示しない）で上流から新たに搬送された成形品Ｃを回転保持部１２２へ受け入れる（手順２）。
　液体噴射部１３０による液体の噴射が正常に完了しなかった場合は、制御ユニット（図示しない）は成形品Ｃをエラー品として判定する（手順６）とともに、ターレット１１０を回転して成形品排出部（図示しない）に回転保持部１２２を移動させ、成形品受入部（図示しない）での上流から新たに搬送された成形品Ｃの受け入れを停止し（手順８）、成形品Ｃをエラー排出路（図示しない）から成形品確認装置１００外へ排出し（手順９）、成形品確認装置１００を停止する（手順１０）。 If the liquid injection by the liquid injection section 130 is completed normally, the control unit (not shown) determines that the molded product C is a normal product (step 6), rotates the turret 110 to move the rotating holding section 122 to the molded product discharge section (not shown), and transports the molded product C from the regular discharge path (not shown) to the next process downstream (step 7), and the molded product receiving section (not shown) accepts the newly transported molded product C from upstream into the rotating holding section 122 (step 2).
If the liquid injection by the liquid injection section 130 is not completed normally, the control unit (not shown) determines that the molded product C is an error product (step 6), rotates the turret 110 to move the rotating holding section 122 to the molded product discharge section (not shown), stops the acceptance of newly transported molded products C from upstream at the molded product receiving section (not shown) (step 8), discharges the molded product C from the error discharge path (not shown) outside the molded product inspection device 100 (step 9), and stops the molded product inspection device 100 (step 10).
　これによって、エラー品と判定された成形品Ｃが下流の工程に搬出されることを確実に防ぐことができ、成形品確認装置１００の復帰作業を迅速に実施できる。 This makes it possible to reliably prevent molded products C that have been determined to be erroneous products from being transported to downstream processes, and allows the molded product inspection device 100 to be quickly restored.
　ここで、本発明の一実施形態に係る成形品確認装置１００について、制御ユニット（図示しない）による正常品およびエラー品の判別方法の一例を、圧延方向検出部１２５の受光部１２７で受光した反射光Ｂ２の強度の変化を示す表１を用いて具体的に説明する。
　なお、表１の横軸は経過時間を、縦軸は受光部１２７で受光した反射光Ｂ２の強度である。 Here, an example of a method for discriminating between normal and erroneous products by a control unit (not shown) for the molded product inspection device 100 according to one embodiment of the present invention will be specifically explained using Table 1 showing the change in intensity of reflected light B2 received by the light receiving unit 127 of the rolling direction detection unit 125.
In Table 1, the horizontal axis represents the elapsed time, and the vertical axis represents the intensity of the reflected light B2 received by the light receiving unit 127.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示すように、１２０ｍｓｅｃ間に反射光Ｂ２の強度が大きくなるピーク（状態２に相当）が３回（Ｐ１、Ｐ２、Ｐ３）、反射光Ｂ２の強度が小さくなるピーク（状態１に相当）が２回（Ｌ１、Ｌ２）発生している。
　すなわち、この成形品ＣはＰ１からＰ２で半回転し、Ｐ１からＰ３で１回転していることがわかる。 As shown in Table 1, within 120 msec, there are three peaks (P1, P2, P3) where the intensity of reflected light B2 increases (corresponding to state 2), and there are two peaks (L1, L2) where the intensity of reflected light B2 decreases (corresponding to state 1).
That is, it can be seen that this molded product C makes half a rotation from P1 to P2, and makes one rotation from P1 to P3.
　また、成形品Ｃの回転が安定していれば、成形品Ｃの回転速度はＰ１からＰ２までの半回転の時間から容易に特定することができる。
　Ｐ１到達時が１２ｍｓｅｃで、Ｐ２到達時が５４ｍｓｅｃであることから、成形品Ｃが半回転する時間は４２ｍｓｅｃであり、８４ｍｓｅｃで１回転していることがわかる。
　なお、成形品Ｃの回転が不安定であれば、反射光Ｂ２の強度の各ピーク間の時間のバラツキが大きくなるので、異常の発生を制御ユニット（図示しない）が簡単に検知することができる。 Furthermore, if the rotation of the molded product C is stable, the rotation speed of the molded product C can be easily determined from the time required for half a rotation from P1 to P2.
Since P1 is reached at 12 msec and P2 is reached at 54 msec, it is understood that the time for molded product C to make half a rotation is 42 msec and that it completes one rotation in 84 msec.
If the rotation of the molded product C is unstable, the variation in the time between peaks in the intensity of the reflected light B2 will increase, making it easy for a control unit (not shown) to detect the occurrence of an abnormality.
　成形品Ｃの底部Ｃｂ全体に均一にコーティング用の液体を噴射する方法として、回転速度７１４ｒｐｍ（１回転８４ｍｓｅｃ）で、９０ｍｓｅｃ（３８５．７度）噴射する場合を考えると、例えば、成形品Ｃの回転速度（１回転８４ｍｓｅｃ）を確認してから液体噴射部を作動して、所定時間（９０ｍｓｅｃ）液体を噴射することも考えられる。
　しかしながら、成形品Ｃの回転速度を確認するまで、すなわち、反射光Ｂ２の強度のピークＰ１とＰ２に到達するまで（Ｐ１到達までの時間に加えてさらに半回転４２ｍｓｅｃ）の間液体を噴射できなくなるため、生産速度が遅くなってしまう虞がある。
　また、制御ユニット（図示しない）がＰ１に到達したことを検知した時点で液体の噴射を開始し、Ｐ３に到達した時点で液体の噴射を停止することで生産速度を向上することも考えられるが、Ｐ１に到達するまで液体の噴射を開始できない分生産速度は遅くなり、Ｐ１に到達するまでの時間が成形品Ｃの圧延目Ｃｔの向きによって変化（最大で半回転４２ｍｓｅｃ）するため、生産速度が不安定となってしまう虞があった。 As a method for uniformly spraying the coating liquid over the entire bottom Cb of the molded product C, when considering the case of spraying for 90 msec (385.7 degrees) at a rotation speed of 714 rpm (84 msec per rotation), it is possible, for example, to check the rotation speed of the molded product C (84 msec per rotation) and then activate the liquid spraying unit to spray the liquid for a predetermined time (90 msec).
However, since liquid cannot be sprayed until the rotational speed of the molded product C is confirmed, that is, until the intensity of the reflected light B2 reaches peaks P1 and P2 (the time until P1 is reached plus an additional half rotation of 42 msec), there is a risk that the production speed will slow down.
It is also possible to improve the production speed by starting liquid injection when a control unit (not shown) detects that P1 has been reached and stopping liquid injection when P3 has been reached. However, the production speed would be slower because liquid injection cannot start until P1 has been reached, and the time it takes to reach P1 varies depending on the direction of the rolling grain Ct of the molded product C (up to a maximum of 42 msec per half rotation), which could result in an unstable production speed.
　そこで、成形品Ｃの回転開始から回転が安定するまでの時間を想定し、その時間が経過後に、液体の噴射とほぼ同時に照射対象面Ｃｓからの反射光Ｂ２の強度の変化を取得し始めることで、液体の噴射が終了する時間（９０ｍｓｅｃ）までに制御ユニット（図示しない）がＰ１とＰ２の到達時間から成形品Ｃの半回転にかかる時間を特定することで、液体の噴射中の回転速度を確認することができ、生産速度を安定的に向上させることができる。 Therefore, by estimating the time from when the rotation of molded product C starts until the rotation stabilizes, and starting to acquire the change in the intensity of reflected light B2 from the irradiated surface Cs almost simultaneously with the injection of the liquid after that time has elapsed, a control unit (not shown) can determine the time it takes for molded product C to make half a rotation from the arrival times of P1 and P2 by the time when the injection of the liquid ends (90 msec), and it is possible to confirm the rotation speed during the injection of the liquid, thereby enabling a stable improvement in production speed.
　以上、本発明の一実施形態を詳述したが、本発明は上記実施形態に限定されるものはなく、請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。 Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design changes can be made without departing from the invention described in the claims.
　なお、上述した実施形態では、成形品は回転保持部に保持され、ターレットによって成形品受入部、塗布領域、成形品排出部に移動可能に構成されていたが、成形品の移動方法はこれに限定されず、例えば、コンベア上の上流から下流にかけて成形品受入部、塗布領域、成形品排出部を配置して、コンベアで搬送されてきた成形品が塗布領域に配置された回転保持部に保持されるように構成してもよい。
　また、上述した実施形態では、成形品は回転伝達ベルトによって回転力を伝達されるものとして説明したが、成形品への回転伝達方法はこれに限定されず、例えば、ローラによって回転を伝達してもよい。 In the above-described embodiment, the molded product is held in the rotating holding section and is configured to be movable by a turret to the molded product receiving section, the coating area, and the molded product discharge section. However, the method of moving the molded product is not limited to this. For example, the molded product receiving section, the coating area, and the molded product discharge section may be arranged from upstream to downstream on the conveyor, and the molded product transported on the conveyor may be held in the rotating holding section arranged in the coating area.
In addition, in the above-described embodiment, the molded product is described as having the rotational force transmitted thereto by a rotation transmission belt, but the method of transmitting rotation to the molded product is not limited to this, and the rotation may be transmitted by, for example, a roller.
　また、上述した実施形態では、制御ユニットは、エラー品が発生した際にエラー排出部からエラー品の成形品を排出するとともに成形品受入部への成形品の供給を停止し成形品確認装置を停止するものとして説明したが、制御ユニットの動作はこれに限定されず、例えば、成形品受入部への成形品の供給や圧延方向検出部を停止しなくてもよく、連続してエラー品が発生した場合のみ成形品確認装置を停止するようにしてもよい。
　また、上述した実施形態では、成形品に液体噴射部からコーティング用の液体を成形品底部に噴射するものとして説明したが、噴射物の種類や噴射箇所はこれに限定されず、例えば、洗浄液や潤滑剤、冷却水、加圧エアなどを成形品胴部や成形品内部に噴射してもよい。 In addition, in the above-described embodiment, the control unit has been described as discharging the erroneous molded product from the error discharge section when an error product occurs, stopping the supply of molded products to the molded product receiving section, and stopping the molded product confirmation device. However, the operation of the control unit is not limited to this, and for example, it is not necessary to stop the supply of molded products to the molded product receiving section or the rolling direction detection section, and the molded product confirmation device may be stopped only when error products occur consecutively.
In addition, in the above-described embodiment, the coating liquid is sprayed from the liquid spraying section onto the bottom of the molded product, but the type of material and the spraying location are not limited to this, and for example, cleaning liquid, lubricant, cooling water, pressurized air, etc. may be sprayed onto the body or inside of the molded product.
　また、上述した実施形態では、成形品は有底円筒形状として説明したが、成形品の形状はこれに限定されず、例えば、圧延金属板を打ち抜いたブランク板や、缶蓋等であってもよい。
　また、上述した実施形態では、圧延方向検出部は照射光を成形品の底部に照射するものとして説明したが、照射光の照射面はこれに限定されず、例えば、フランジ部や胴部、板部など金属光沢を有する面であれば適用可能である。 In addition, in the above-described embodiment, the molded product has been described as having a bottomed cylindrical shape, but the shape of the molded product is not limited to this and may be, for example, a blank plate punched out of a rolled metal plate, a can lid, etc.
In addition, in the above-described embodiment, the rolling direction detection unit has been described as irradiating the irradiated light onto the bottom of the molded product, but the irradiated surface of the irradiated light is not limited to this, and can be applied to any surface having a metallic luster, such as a flange portion, a body portion, or a plate portion.
　また、上述した実施形態では、回転確認装置は成形品を回転させながら液体を噴射する構成を含むものとして説明したが、回転確認装置の構成はこれに限定されず、例えば、複数の成形品の圧延方向を揃える整列装置を回転確認装置の構成に含むものとしてもよい。
　なお、複数の成形品の圧延方向を揃える整列装置を回転確認装置の構成に含む場合、表１ではピークを検出することにより圧延方向を特定していたが、ある一定の閾値（例えば表１の４５００）を設定し、反射光の強度値がこれを超えた場合に大凡の圧延方向を特定することも可能である。
　また、回転保持部に成形品の回転角度を検出する回転角度センサを搭載して、反射光の強度の連続的な変化の関係から特定した圧延方向と回転角度センサの出力から成形品の回転角度や圧延方向の向きを制御することも可能である。 In addition, in the above-described embodiment, the rotation confirmation device has been described as including a configuration for spraying liquid while rotating the molded product, but the configuration of the rotation confirmation device is not limited to this, and for example, the configuration of the rotation confirmation device may include an alignment device that aligns the rolling directions of multiple molded products.
In addition, when an alignment device that aligns the rolling directions of multiple molded products is included in the configuration of the rotation confirmation device, the rolling direction is identified by detecting a peak in Table 1, but it is also possible to set a certain threshold value (for example, 4500 in Table 1) and identify the approximate rolling direction when the intensity value of the reflected light exceeds this threshold value.
It is also possible to mount a rotation angle sensor on the rotation holding section to detect the rotation angle of the molded product, and to control the rotation angle and rolling direction of the molded product from the rolling direction identified from the relationship between the continuous changes in the intensity of the reflected light and the output of the rotation angle sensor.
　１００　・・・　成形品確認装置
　１１０　・・・　ターレット
　１２０　・・・　成形品回転ユニット
　１２１　・・・　回転伝達ベルト
　１２２　・・・　回転保持部
　１２３　・・・　ポケット
　１２４　・・・　ローラ
　１２５　・・・　圧延方向検出部
　１２６　・・・　発光部
　１２７　・・・　受光部
　１３０　・・・　液体噴射部
　　　Ｃ　・・・　成形品
　　Ｃｍ　・・・　胴部
　　Ｃｂ　・・・　底部
　　Ｃｓ　・・・　照射対象面
　　Ｃｔ　・・・　圧延目
　Ｃｔ１　・・・　圧延目の山
　Ｃｔ２　・・・　圧延目の谷
　Ｃｔ３　・・・　圧延目の山と谷の接続面
　　　Ｓ　・・・　塗布領域
　　Ｂ１　・・・　照射光
　　Ｂ２　・・・　反射光
　Ｂ１ｃ　・・・　照射光の光軸
　Ｂ２ｃ　・・・　反射光の光軸
　Ｂ１ｄ　・・・　照射光の入射角度
　Ｂ２ｄ　・・・　反射光の反射角度
　　　Ｔ　・・・　圧延方向検出部から照射対象面までの距離

  DESCRIPTION OF SYMBOLS 100: Molded product inspection device 110: Turret 120: Molded product rotation unit 121: Rotation transmission belt 122: Rotation holding section 123: Pocket 124: Roller 125: Rolling direction detection section 126: Light emitting section 127: Light receiving section 130: Liquid injection section C: Molded product Cm: Body section Cb: Bottom section Cs: Irradiation target surface Ct: Rolling mark Ct1: Rolling mark crest Ct2: Rolling mark valley Ct3: Connection surface between crest and valley of rolling mark S: Coating area B1: Irradiated light B2: Reflected light B1c: Optical axis of irradiated light B2c: Optical axis of reflected light B1d: Incident angle of irradiated light B2d: Reflection angle of reflected light T: Distance from the rolling direction detector to the surface to be irradiated

Claims (9)

  1. 　圧延金属板から成形した金属成形品を回転可能に保持する回転保持部および前記回転保持部に保持された金属成形品の圧延方向を検出する圧延方向検出部が設けられた成形品回転ユニットと、前記成形品回転ユニットの動作を制御する制御ユニットとを有した成形品確認装置であって、
    　前記圧延方向検出部は、前記回転保持部に保持された金属成形品の表面である金属光沢を有した照射対象面に照射光を照射する発光部と、前記発光部からの照射光のうち、照射対象面から反射した反射光を受光する受光部とを有し、
    　前記発光部は、照射対象面に対して、垂直方向から所定の入射角度で照射光を照射し、
    　前記制御ユニットは、前記圧延方向検出部から受け取った前記受光部が受光した反射光の強度の連続的な変化情報を基に、前記回転保持部に保持された金属成形品の圧延方向を検出可能に構成されていることを特徴とする成形品確認装置。     A molded product inspection device having a molded product rotation unit provided with a rotary holding unit that rotatably holds a metal molded product molded from a rolled metal plate and a rolling direction detection unit that detects the rolling direction of the metal molded product held by the rotary holding unit, and a control unit that controls the operation of the molded product rotation unit,
    The rolling direction detection unit includes a light emitting unit that irradiates light onto an irradiation target surface having a metallic luster, which is the surface of the metal molded product held by the rotating holding unit, and a light receiving unit that receives light reflected from the irradiation target surface out of the irradiation light from the light emitting unit,
    The light emitting unit irradiates an irradiation target surface with irradiation light at a predetermined angle of incidence from a vertical direction,
    The control unit is configured to detect the rolling direction of the metal molded product held in the rotating holding unit based on continuous change information of the intensity of the reflected light received by the light receiving unit received from the rolling direction detection unit.
  2. 　前記発光部は、照射対象面に対して、垂直方向から５度以上１５度以下の入射角度で照射光を照射することを特徴とする請求項１に記載の成形品確認装置。 The molded product inspection device according to claim 1, characterized in that the light emitting unit irradiates the target surface with light at an incident angle of 5 degrees or more and 15 degrees or less from the vertical direction.
  3. 　前記圧延方向検出部は、照射対象面に対して、１００ｍｍ以上２００ｍｍ以下の距離に配置されていることを特徴とする請求項１に記載の成形品確認装置。 The molded product inspection device according to claim 1, characterized in that the rolling direction detection unit is disposed at a distance of 100 mm or more and 200 mm or less from the irradiation target surface.
  4. 　前記制御ユニットは、前記圧延方向検出部から受け取った前記受光部が受光した反射光の強度の連続的な変化情報を基に、前記回転保持部に保持された金属成形品の圧延方向の変化時間から回転速度を算出可能に構成されていることを特徴とする請求項１に記載の成形品確認装置。 The molded product inspection device according to claim 1, characterized in that the control unit is configured to be able to calculate the rotation speed from the time of change in the rolling direction of the metal molded product held in the rotating holding unit, based on information on continuous changes in the intensity of the reflected light received by the light receiving unit and received from the rolling direction detection unit.
  5. 　前記成形品回転ユニットは、前記回転保持部に保持した金属成形品を排出する成形品排出部をさらに有し、
    　前記成形品排出部は、前記回転ユニットから排出される金属成形品を正常品として排出する正規排出路と、エラー品として排出するエラー排出路とを有し、
    　前記制御ユニットは、算出した前記回転保持部に保持された成形品の回転速度を基に、前記回転ユニットから排出される金属成形品を正規排出路とエラー排出路のいずれかから排出するように前記成形品排出部に指示することを特徴とする請求項４に記載の成形品確認装置。     The molded product rotation unit further includes a molded product discharge section that discharges the metal molded product held by the rotation holding section,
    the molded product discharge section has a normal discharge path for discharging the metal molded product discharged from the rotation unit as a normal product and an error discharge path for discharging the metal molded product as an error product,
    The molded product inspection device according to claim 4, characterized in that the control unit instructs the molded product discharge section to discharge the metal molded product discharged from the rotation unit from either a normal discharge path or an error discharge path based on the calculated rotational speed of the molded product held in the rotation holding section.
  6. 　前記成形品回転ユニットには、前記回転保持部に保持された金属成形品の回転中に、金属成形品に向けて液体を噴射する液体噴射部を有することを特徴とする請求項１に記載の成形品確認装置。 The molded product inspection device according to claim 1, characterized in that the molded product rotation unit has a liquid injection unit that injects liquid toward the metal molded product while the metal molded product held by the rotation holding unit is rotating.
  7. 　前記制御ユニットは、前記圧延方向検出部から受け取った前記受光部が受光した反射光の強度の連続的な変化情報を基に、前記回転保持部に保持された金属成形品の圧延方向の変化時間から回転速度を算出可能且つ、算出した前記回転保持部に保持された金属成形品の回転速度を基に、前記液体噴射部からの液体の噴射開始および噴射終了を制御可能に構成されていることを特徴とする請求項６に記載の成形品確認装置。 The molded product inspection device according to claim 6, characterized in that the control unit is configured to be capable of calculating the rotation speed from the time of change in the rolling direction of the metal molded product held in the rotating holding unit based on the continuous change information of the intensity of the reflected light received by the light receiving unit received from the rolling direction detection unit, and to be capable of controlling the start and end of liquid injection from the liquid injection unit based on the calculated rotation speed of the metal molded product held in the rotating holding unit.
  8. 　前記圧延方向検出部は、反射型レーザセンサで構成されていることを特徴とする請求項１に記載の成形品確認装置。 The molded product inspection device according to claim 1, characterized in that the rolling direction detection unit is composed of a reflective laser sensor.
  9. 　圧延金属板から成形した金属成形品を保持する回転保持手段と、前記回転保持手段によって保持された金属成形品の圧延方向を検出する圧延方向検出手段とを有する成形品の確認方法であって、
    　前記圧延方向検出手段は、前記回転保持手段によって保持された金属成形品の表面である金属光沢を有した照射対象面に対して、垂直方向から所定の入射角度で照射光を照射して、照射対象面から反射した反射光の強度の連続的な変化情報を基に、圧延方向を検出することを特徴とする成形品の確認方法。     A method for checking a formed product, comprising: a rotating and holding means for holding a metal formed product formed from a rolled metal plate; and a rolling direction detection means for detecting a rolling direction of the metal formed product held by the rotating and holding means,
    The rolling direction detection means is characterized in that it irradiates light at a predetermined incident angle from a vertical direction onto an irradiation target surface having a metallic luster, which is the surface of a metal molded product held by the rotating and holding means, and detects the rolling direction based on information on continuous changes in the intensity of the reflected light from the irradiation target surface.
PCT/JP2023/025229 2022-10-25 2023-07-07 Molded article confirmation device WO2024089944A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129781A (en) * 1976-05-17 1978-12-12 Doyle W Film thickness measuring apparatus and method
JPH08271224A (en) * 1995-03-31 1996-10-18 Sumitomo Electric Ind Ltd Method for detecting and aligning rolling direction of rolled metal sheet, and device for aligning the sheet in the rolling direction
JP2005525236A (en) * 2002-05-13 2005-08-25 ノードソン　コーポレーション Apparatus and method for detecting rotational speed of surface in spray device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129781A (en) * 1976-05-17 1978-12-12 Doyle W Film thickness measuring apparatus and method
JPH08271224A (en) * 1995-03-31 1996-10-18 Sumitomo Electric Ind Ltd Method for detecting and aligning rolling direction of rolled metal sheet, and device for aligning the sheet in the rolling direction
JP2005525236A (en) * 2002-05-13 2005-08-25 ノードソン　コーポレーション Apparatus and method for detecting rotational speed of surface in spray device

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