WO2017037824A1 - 部品実装機、ノズル撮像方法 - Google Patents
部品実装機、ノズル撮像方法 Download PDFInfo
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- WO2017037824A1 WO2017037824A1 PCT/JP2015/074605 JP2015074605W WO2017037824A1 WO 2017037824 A1 WO2017037824 A1 WO 2017037824A1 JP 2015074605 W JP2015074605 W JP 2015074605W WO 2017037824 A1 WO2017037824 A1 WO 2017037824A1
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- Prior art keywords
- imaging
- light
- nozzle
- wavelength
- imaging position
- Prior art date
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0452—Mounting machines or lines comprising a plurality of tools for guiding different components to the same mounting place
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0066—Reflectors for light sources specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/04—Mounting of components, e.g. of leadless components
- H05K13/0404—Pick-and-place heads or apparatus, e.g. with jaws
- H05K13/0408—Incorporating a pick-up tool
- H05K13/041—Incorporating a pick-up tool having multiple pick-up tools
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
- H05K13/08—Monitoring manufacture of assemblages
- H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
- H05K13/0813—Controlling of single components prior to mounting, e.g. orientation, component geometry
Definitions
- the present invention relates to a nozzle imaging technique for imaging a nozzle used by a mounting head for holding a component.
- a component mounter that uses a nozzle to suck a component supplied by a feeder and mount it on a substrate has been used.
- the nozzle may fail to attract the component from the feeder or mount the component on the board. Therefore, in Patent Documents 1 and 2, in order to confirm the presence or absence of such a failure, the nozzles after the component suction or the component mounting is imaged. Specifically, the nozzle is imaged by the camera while irradiating light from the irradiating body to the nozzle positioned at a predetermined station.
- the nozzle is imaged by the imaging unit while irradiating light from the illumination to the nozzle located at the imaging position in this way, light different from the illumination light, such as natural light, affects the imaging of the nozzle, In some cases, good nozzle imaging could not be performed.
- the present invention has been made in view of the above problems, and when imaging a nozzle used by a mounting head for holding a component, the effect of light different from illumination light on the imaging of the nozzle is suppressed, and imaging of the nozzle is performed.
- the purpose is to provide a technique that can be performed well.
- the component mounter allows the first illumination for irradiating the first imaging light toward the first imaging position, while allowing the transmission of the first wavelength light.
- a first image pickup having a first filter that restricts transmission of light having a wavelength different from the wavelength, and a first image pickup unit that receives light incident from the first image pickup position facing the first image pickup position by the first image pickup element.
- a system and a mounting head capable of holding a component at a first imaging position and capable of positioning the nozzle at the first imaging position, wherein the first imaging system irradiates the first imaging position after being irradiated from the first illumination to the first imaging position;
- the nozzle located at the first imaging position is imaged by receiving the light transmitted through the first imaging element of the first imaging unit.
- the nozzle imaging method includes a step of positioning a nozzle used by a mounting head for holding a component at an imaging position, a step of irradiating light of a predetermined wavelength toward the imaging position, And imaging the nozzle located at the imaging position by receiving light that has passed through the filter after being irradiated to the imaging position by the imaging device, and the filter allows transmission of light of a predetermined wavelength while allowing the predetermined wavelength. Limit the transmission of light of different wavelengths.
- the present invention (component mounter, nozzle imaging method) configured as described above, light of the first wavelength (predetermined wavelength) is irradiated toward the first imaging position (imaging position), and this light is the first imaging position. It functions as light for lighting. Then, the light that has passed through the first filter (filter) after being irradiated to the first imaging position is received by the first imaging element (imaging element) of the first imaging unit (imaging unit), so that the first imaging position is obtained.
- the nozzle located is imaged.
- the first filter allows transmission of light having a first wavelength while restricting transmission of light having a wavelength different from the first wavelength. In this way, light different from the illumination light of the first wavelength is suppressed from passing through the first filter and reaching the first image sensor. As a result, it is possible to satisfactorily image the nozzle while suppressing the influence of light different from the illumination light on the imaging of the nozzle.
- the nozzle used for holding the component by the mounting head when the nozzle used for holding the component by the mounting head is imaged, it is possible to satisfactorily capture the nozzle while suppressing the influence of light different from the illumination light on the imaging of the nozzle. Become.
- FIG. 4 is a partial plan view schematically showing a bottom portion of the mounting head of FIG. 3.
- 2 is a partial perspective view schematically showing an appearance of an imaging unit 5.
- FIG. 6 is a schematic diagram equivalently showing an optical configuration included in the imaging unit of FIG. 5.
- FIG. 1 is a partial plan view schematically showing a component mounter according to the present invention.
- FIG. 2 is a block diagram showing an electrical configuration of the component mounter of FIG. In both figures and the following figures, XYZ orthogonal coordinates with the Z direction as the vertical direction are shown as appropriate.
- the component mounter 1 includes a controller 100 that comprehensively controls the entire apparatus.
- the controller 100 includes an arithmetic processing unit 110 that is a computer composed of a CPU (Central Processing Unit) and a RAM (Random Access Memory), and a storage unit 120 composed of an HDD (Hard Disk Drive).
- the controller 100 includes a drive control unit 130 that controls the drive system of the component mounter 1 and an imaging control unit 140 that controls imaging of nozzles, which will be described in detail later.
- the arithmetic processing part 110 controls the drive control part 130 according to the program memorize
- the component mounter 1 includes a pair of conveyors 12 and 12 provided on a base 11. And the component mounting machine 1 mounts components on the board
- the completed substrate S is carried out from the mounting processing position to the downstream side in the X direction by the conveyor 12.
- the component mounter 1 is provided with a pair of Y-axis rails 21, 21 extending in the Y direction, a Y-axis ball screw 22 extending in the Y direction, and a Y-axis motor My that rotationally drives the Y-axis ball screw 22, and a head support member 23 is fixed to the nut of the Y-axis ball screw 22 while being supported by the pair of Y-axis rails 21 and 21 so as to be movable in the Y direction.
- An X-axis ball screw 24 extending in the X direction and an X-axis motor Mx that rotationally drives the X-axis ball screw 24 are attached to the head support member 23, and the head unit 3 can move to the head support member 23 in the X direction.
- the nut is fixed to the nut of the X-axis ball screw 24 while being supported by the nut. Therefore, the drive control unit 130 rotates the Y-axis ball screw 22 by the Y-axis motor My to move the head unit 3 in the Y direction, or rotates the X-axis ball screw 24 by the X-axis motor Mx to move the head unit 3 to X. Can be moved in the direction.
- Two component supply units 28 are arranged in the X direction on both sides of the pair of conveyors 12 and 12 in the Y direction.
- a plurality of tape feeders 281 are detachably attached to each component supply unit 28 along the arrangement pitch La in the X direction. Small pieces such as integrated circuits, transistors, capacitors, and the like are attached to each tape feeder 281.
- a reel on which a tape storing tape-shaped components (chip electronic components) at predetermined intervals is wound.
- the tape feeder 281 supplies parts in the tape by intermittently feeding the tape to the head unit 3 side.
- the head unit 3 has a plurality (four) of mounting heads 4 arranged linearly in the X direction.
- Each mounting head 4 sucks and mounts components by a nozzle 40 (FIG. 3) attached to the lower end. That is, the mounting head 4 moves above the tape feeder 281 and sucks the components supplied by the tape feeder 281. Specifically, the mounting head 4 adsorbs the component by lowering the nozzle 40 until it abuts on the component and then raising the nozzle 40 while generating a negative pressure in the nozzle 40. Subsequently, the mounting head 4 moves above the substrate S at the mounting processing position and mounts components on the substrate S. Specifically, the mounting head 4 mounts the component by generating atmospheric pressure or positive pressure in the nozzle 40 after lowering the nozzle 40 until the component contacts the substrate S.
- FIG. 3 is a partial front view schematically showing the vicinity of the lower end of an example of the mounting head.
- FIG. 4 is a partial plan view schematically showing the bottom of the mounting head of FIG.
- each mounting head 4 is a rotary head in which a plurality of nozzles 40 are arranged circumferentially. Subsequently, the configuration of the mounting head 4 will be described with reference to FIGS. 3 and 4 together. Since the configuration of the four mounting heads 4 is common, only one mounting head 4 will be described here.
- the mounting head 4 has a main shaft 41 extending in the Z direction (vertical direction) and a nozzle holder 42 supported on the lower end of the main shaft 41.
- the nozzle holder 42 is supported so as to be rotatable in a rotation direction R around a rotation axis C (virtual axis) parallel to the Z direction, and an R-axis motor Mr (see FIG. 2) provided at the upper end of the mounting head 4. ) To receive the driving force.
- the nozzle holder 42 supports a plurality (eight) lifting shafts 43 arranged at equal angles in a circumferential shape around the rotation axis C.
- Each elevating shaft 43 is supported so as to be movable up and down, and is urged upward by an urging member (not shown).
- a nozzle 40 is detachably attached to the lower end of each lifting shaft 43.
- the nozzle holder 42 supports a plurality (eight) of nozzles 40 arranged at equal angles in a circumferential shape around the rotation axis C. Therefore, when the drive control unit 130 outputs a rotation command to the R-axis motor Mr, the nozzles 40 integrally rotate the rotation axis C along with the nozzle holder 42 that rotates by receiving the driving force from the R-axis motor Mr. It rotates along a circumferential orbit O that is the center.
- the main shaft 41 supports the nozzle lifting mechanism 44 above the plurality of lifting shafts 43.
- the nozzle raising / lowering mechanism 44 has two pressing members 441 arranged with an angle of 180 degrees around the rotation axis C.
- Each pressing member 441 moves up and down independently of each other in response to a driving force of a Z-axis motor Mz (FIG. 2) built in the nozzle lifting mechanism 44. Therefore, when the drive control unit 130 outputs a lowering command to the Z-axis motor Mz, the pressing member 441 is lowered by receiving the driving force from the Z-axis motor Mz.
- the pressing member 441 lowers one lifting shaft 43 located immediately below the plurality of lifting shafts 43 against the urging force acting on the lifting shaft 43, and a lowered position Zd where the components are attracted or mounted.
- the nozzle 40 is lowered to the bottom.
- the drive control unit 130 outputs a raising command to the Z-axis motor Mz
- the pressing member 441 is raised by receiving the driving force from the Z-axis motor Mz.
- the one raising / lowering shaft 43 pressed by the pressing member 441 is raised according to the urging force with the nozzle 40, and the nozzle 40 is raised to the raised position Zu.
- the lowered position Zd and the raised position Zu are shown with respect to the lower end of the nozzle 40, respectively.
- the positions immediately below the pressing member 441 are work positions PA and PB for sucking and mounting components by the nozzle 40. That is, corresponding to the arrangement of the two pressing members 441 described above, in the mounting head 4, the two work positions PA and PB are provided with an angle of 180 degrees around the rotation axis C.
- the nozzle holder 42 two nozzles 40 (two nozzles positioned opposite to each other across the rotation axis C) are arranged with an interval of 180 degrees around the rotation axis C.
- the two nozzles 40 that make a pair in this way satisfy an arrangement relationship in which one nozzle 40 is located at the work position PA and at the same time the other nozzle 40 is located at the work position PB.
- the drive control unit 130 adjusts the rotation angle of the plurality of nozzles 40 by the R-axis motor Mr, so that each of the two nozzles 40, 40 forming any one of the four nozzle pairs is provided.
- the mounting head 4 when picking up a component at the work position PA, the mounting head 4 is moved above the component supply unit 28 to position the work position PA directly above the tape feeder 281. In this state, the nozzle 40 that does not pick up components is stopped at the work position PA in the rotation direction R, and is lowered from the raised position Zu to the lowered position Zd in the Z direction. Then, a negative pressure is applied to the nozzle 40 at a timing when the nozzle 40 comes into contact with the component supplied by the tape feeder 281, and the component is sucked from the tape feeder 281 to the nozzle 40. Subsequently, the nozzle 40 that sucks the component is raised from the lowered position Zd to the raised position Zu in the Z direction.
- the two work positions PA and PB are arranged in a straight line in the X direction, and the distance Lb between the centers of the two nozzles 40 and 40 forming a pair is the arrangement pitch La (X) of the tape feeder 281 in the X direction. Equivalent to FIG. Accordingly, the two nozzles 40 and 40 located at the work positions PA and PB can simultaneously perform the suction of the components from the tape feeders 281 and 281.
- the mounting head 4 when mounting a component at the work position PA, the mounting head 4 is moved above the substrate S to position the work position PA directly above the place to be mounted on the substrate S. In this state, while the nozzle 40 that picks up the component is stopped at the work position PA in the rotation direction R, the nozzle 40 is lowered from the raised position Zu to the lowered position Zd in the Z direction. Then, atmospheric pressure or positive pressure is applied to the nozzle 40 at the timing when the component contacts the substrate S, and the component is mounted from the nozzle 40 onto the substrate S. Subsequently, the nozzle 40 from which the component is detached is raised from the lowered position Zd to the raised position Zu in the Z direction. The same applies to the case where components are mounted at the work position PB.
- a cylindrical light diffusion member 5 is attached to the lower end of the main shaft 41 of the mounting head 4, and a plurality of nozzles 40 are arranged so as to surround the light diffusion member 5.
- the light diffusing member 5 has the same configuration as the diffusing member described in, for example, Japanese Patent Application Laid-Open No. 2012-238726, and side view imaging of the nozzle 40 by the imaging unit 6 (FIGS. 5 and 6) described in detail later. Used for.
- the side view of the nozzle 40 (the side surface of the nozzle 40 viewed from the X direction) that is positioned at the work position PA, PB in the rotation direction R and at the raised position Zu in the Z direction is the imaging unit 6.
- the camera 60 takes an image.
- the arithmetic processing unit 110 controls suction / mounting of components by the nozzle 40, for example, as follows.
- the side view of the nozzle 40 located at the rising position Zu is imaged at each timing before and after picking up the part. If foreign matter is attached to the nozzle 40 in the side view image before component suction, component suction is stopped. If there is no component at the lower end of the nozzle 40 in the side view image after the nozzle 40 is lowered to the lowered position Zd for component adsorption, it is determined that component adsorption has failed, and component adsorption is performed again. Furthermore, the thickness and posture of the component attracted by the nozzle 40 are also appropriately determined based on the side view image of the nozzle 40.
- the side view of the nozzle 40 located at the rising position Zu is imaged at each timing before and after mounting the component. If there is no component at the lower end of the nozzle 40 in the side view image before component mounting, it is determined that the component has dropped from the nozzle 40 and component mounting is stopped. Further, if a component remains at the lower end of the nozzle 40 in the side view image after the nozzle 40 is lowered to the lowered position Zd for component mounting, it is determined that the component mounting has failed and the component mounting is re-executed. To do.
- FIG. 5 is a partial perspective view schematically showing the external appearance of the imaging unit 5.
- FIG. 6 is a schematic diagram equivalently showing an optical configuration of the imaging unit of FIG. 5 and 6 partially show the configuration of the mounting head 4 in order to show the relationship with the mounting head 4.
- the imaging unit 6 includes a camera 60 and images the nozzles 40 located at the work positions PA and PB to the camera 60.
- the housing 61 included in the imaging unit 6 has a main body 611 having a reverse T-shape in a side view from the Y direction and having the camera 60 attached to the upper portion thereof, and the X direction from both ends of the main body 611 in the Y direction. And two nozzle facing portions 612 and 612 projecting from each other.
- the imaging unit 6 is arranged so as to sandwich the plurality of nozzles 40 from the X direction by the two nozzle facing portions 612 and 612, and is fixed to the main shaft 4 of the mounting head 4.
- the imaging unit 6 is configured integrally with the mounting head 4 and can move with the mounting head 4.
- a first window 62A is provided on the inner wall of the nozzle facing portion 612 on one side in the X direction so as to face the work position PA on the one side in the X direction, and inside the nozzle facing portion 612 and the main body 611 on the one side.
- the first range 601A of the solid-state imaging device 601 built in the camera 60 receives light from the work position PA.
- the first imaging unit 64A configured by the first window 62A, the first optical system 63A, and the first range 601A of the solid-state imaging device 601 is arranged on one side of the mounting head 4. And this 1st image pick-up part 64A opposes the work position PA provided with respect to the side surface of the one side of the mounting head 4, and images the work position PA.
- the nozzle 40 moves up and down between the raised position Zu and the lowered position Zd as the pressing member 441 moves up and down.
- the first window 62A is disposed so as to face the tip of the nozzle 40 at the raised position Zu at the work position PA, and the first imaging unit 64A is located at the raised position Zu at the work position PA.
- the side view image of the nozzle 40 is acquired by imaging the tip of the nozzle 40 in the X direction (horizontal direction).
- a first illumination 65A for irradiating illumination light used for imaging by the first imaging unit 64A is disposed on the inner wall of the nozzle facing unit 612 on the other side in the X direction.
- the first illumination 65A is composed of a plurality of LEDs (Light Emitting Diodes) arranged in a matrix on both sides of the second window 62B, and emits light of the first wavelength (blue wavelength) from the other side in the X direction. Irradiate toward work position PA.
- the light emitted from the first illumination 65A arranged on the other side in the X direction of the mounting head 4 is diffused by the light diffusion member 5 and then irradiated to the work position PA.
- the first imaging unit 64A is arranged on one side of the mounting head 4 and faces the work position PA on the side surface on one side of the mounting head 4.
- the first illumination 65A irradiates the work position PA from the other side of the mounting head 4. Therefore, the first imaging unit 64A captures the light irradiated by the first illumination 65A from the back surface of the nozzle 40 at the work position PA, and acquires the silhouette image of the nozzle 40.
- This silhouette image is transferred from the solid-state imaging device 601 to the imaging control unit 140, and is used for determining whether components are attracted or mounted by the nozzle 40.
- the incident surface (surface facing the first window 62A) of the optical element 631 disposed to face the first window 62A has a first optical element.
- a filter 66A is provided.
- the first optical filter 66A allows transmission of light having a first wavelength (blue wavelength), but restricts transmission of light having a second wavelength (red wavelength) longer than the first wavelength. Therefore, the first imaging unit 64A captures a silhouette image of the nozzle 40 located at the work position PA with the first wavelength light.
- the first optical filter 66A either an absorption type or a reflection type can be used.
- the first optical filter 66A is disposed facing the first window 62A, the reflected light from the first optical filter 66A is transmitted to the first window 62A even when a reflective optical filter is used. To the outside of the housing 61. Therefore, it is possible to suppress the reflected light from the first optical filter 66A from causing flare and ghost.
- the first imaging system 67A is configured by the first illumination 65A, the first optical filter 66A, and the first imaging unit 64A. Then, the first imaging system 67A receives the light transmitted through the first optical filter 66A after being irradiated from the first illumination 65A to the work position PA by the solid-state imaging device 601 (first range 601A) of the first imaging unit 64A. Thus, the nozzle 40 located at the work position PA is imaged.
- a second window 62B facing the work position PB on the other side in the X direction is provided on the inner wall of the nozzle facing portion 612 on the other side in the X direction (reverse to one side), and the nozzle facing portion 612 on the other side and Inside the main body 611, a second optical system 63B composed of an optical element 631 is provided. Then, the light incident on the second window 62B from the work position PB is guided to the camera 60 by the second optical system 63B. Thereby, among the solid-state imaging device 601 built in the camera 60, the second range 601B different from the first range 601A receives light from the work position PB.
- the second imaging unit 64 ⁇ / b> B configured by the second window 62 ⁇ / b> B, the second optical system 63 ⁇ / b> B, and the second range 601 ⁇ / b> B of the solid-state imaging device 601 is disposed on the other side of the mounting head 4.
- the second imaging unit 64B faces the work position PB provided on the other side surface of the mounting head 4 and images the work position PB.
- the nozzle 40 moves up and down between the raised position Zu and the lowered position Zd as the pressing member 441 moves up and down.
- the second window 62B is disposed so as to face the tip of the nozzle 40 at the raised position Zu at the work position PB, and the second imaging unit 64B is at the raised position Zu at the work position PB.
- the side view image of the nozzle 40 is acquired by imaging the tip of the nozzle 40 in the X direction (horizontal direction).
- a second illumination 65B for irradiating illumination light used for imaging by the second imaging unit 64B is arranged on the inner wall of the nozzle facing unit 612 on one side in the X direction.
- the second illumination 65B is composed of a plurality of LEDs arranged in a matrix on both sides of the first window 62A, and directs light of the second wavelength (red wavelength) from one side in the X direction to the work position PB. Irradiate.
- the light emitted from the second illumination 65B disposed on one side in the X direction of the mounting head 4 is diffused by the light diffusion member 5 and then irradiated to the work position PB.
- the second imaging unit 64B is disposed on the other side of the mounting head 4 and faces the work position PB on the side surface on the other side of the mounting head 4.
- the second illumination 65B irradiates the work position PB with light from one side of the mounting head 4.
- the second imaging unit 64B captures the light emitted by the second illumination 65B from the back surface of the nozzle 40 at the work position PB, and acquires a silhouette image of the nozzle 40.
- This silhouette image is transferred from the solid-state imaging device 601 to the imaging control unit 140, and is used for determining whether components are attracted or mounted by the nozzle 40.
- the incident surface (the surface facing the second window 62B) of the optical element 631 arranged facing the second window 62B is provided with the second optical element 631.
- a filter 66B is provided.
- the second optical filter 66B allows transmission of light having a second wavelength (red wavelength), but restricts transmission of light having a first wavelength (blue wavelength) shorter than the second wavelength. Therefore, the second imaging unit 64B captures a silhouette image of the nozzle 40 located at the work position PB with the light of the second wavelength.
- any of an absorption type and a reflection type can be used. Since the second optical filter 66B is disposed opposite to the second window 62B, the reflected light from the second optical filter 66B is transmitted from the second window 62B even when a reflective optical filter is used. It can escape to the outside of the housing 61. Therefore, it is possible to suppress the reflected light from the second optical filter 66B from causing flare and ghost.
- the second imaging system 67B is configured by the second illumination 65B, the second optical filter 66B, and the second imaging unit 64B. Then, the second imaging system 67B receives light transmitted through the second optical filter 66B after being irradiated from the second illumination 65B to the work position PB by the solid-state imaging device 601 (second range 601B) of the second imaging unit 64B. By doing so, the nozzle 40 located at the work position PB is imaged.
- the light of the first wavelength is irradiated toward the work position PA, and this light functions as illumination light that illuminates the work position PA. Then, the light that has passed through the first optical filter 66A after being irradiated onto the work position PA is received by the solid-state image sensor 601 of the first optical system 63A, thereby imaging the nozzle 40 located at the work position PA.
- the first optical filter 66A allows transmission of light having the first wavelength while restricting transmission of light having a wavelength different from the first wavelength. In this way, light different from the illumination light of the first wavelength is suppressed from passing through the first optical filter 66A and reaching the solid-state image sensor 601.
- the second imaging system 67B is configured in the same manner, and the nozzle 40 can be favorably imaged.
- the illumination light (the first wavelength light and the second wavelength light) used by each imaging system 67A, 67B is mutually. This may affect the imaging of the nozzle 40. Therefore, by configuring the second imaging system 67B in the same manner as the first imaging system 67A, light different from the illumination light of the second wavelength passes through the second optical filter 66B in the second imaging system 67B and is solid. Reaching the image sensor 601 is suppressed.
- the first optical filter 66A of the first imaging system 67A restricts transmission of light of the second wavelength used for illumination in the second imaging system 67B
- the second optical filter 66B of the second imaging system 67B is the first optical filter 66B.
- the transmission of the first wavelength light used for illumination in the imaging system 67A is limited. Therefore, the influence of the illumination light used by each of the first and second imaging systems 67A and 67B on the imaging of each nozzle 40 is suppressed, and the nozzles in each of the first and second imaging systems 67A and 67B are suppressed. Forty images can be taken well.
- the first and second imaging systems 67A and 67B are arranged to capture the silhouette image of the nozzle 40 as described above, one of the mounting heads 4 in which the first imaging unit 64A of the first imaging system 67A is arranged. From the side, the second illumination 65B of the second imaging system 67B irradiates the mounting head 4 with light. Therefore, the light emitted from the second illumination 65B of the second imaging system 67B and reflected by the mounting head 4 enters the first imaging unit 64A of the first imaging system 67A, and the image of the nozzle 40 of the first imaging system 67A is captured. May be affected.
- the first and second imaging systems 67A and 67B since the influence of the illumination light used by each of the first and second imaging systems 67A and 67B on the imaging of the nozzles 40 is suppressed, the first and second imaging systems 67A and 67B. In each of these, it is possible to satisfactorily capture the silhouette image of the nozzle 40.
- the imaging control unit 140 may simultaneously perform imaging of the nozzle 40 located at the work position PA by the first imaging system 67A and imaging of the nozzle 40 located at the work position PB by the second imaging system 67B. . Thereby, the imaging of the nozzle 40 can be executed efficiently.
- the influence of the illumination light used by the imaging systems 67A and 67B on the imaging of the nozzles 40 is suppressed, the nozzle 40 can be satisfactorily achieved even when the imaging systems 67A and 67B are simultaneously imaged. Imaging can be performed.
- the mounting head 4 is a rotary head, and the two nozzles 40 constituting a pair satisfy a predetermined arrangement relationship and can be simultaneously positioned at the work position PA and the work position PB, respectively. Thereby, it is possible to efficiently perform imaging of the plurality of nozzles 40 held by the rotary head 4.
- the imaging control unit 140 may simultaneously image the nozzles 40 and 40 after the suction of the components at the work positions PA and PB by the imaging systems 67A and 67B. With such a configuration, it is possible to efficiently image the suction state of the components of the two nozzles 40.
- the light used for illumination by the first imaging system 67A has a blue wavelength
- the light used for illumination by the second imaging system 67B has a red wavelength.
- the difference in the wavelength of light used for illumination by each of the imaging systems 67A and 67B is large, and thus the first optical filter 66A is used for the light used in the second imaging system 67B.
- the transmission can be effectively limited, and the second optical filter 66B can effectively limit the transmission of light used in the first imaging system 67A. Therefore, the influence which the light for illumination which each imaging system 67A, 67B uses on the imaging of each nozzle 40 can be suppressed more reliably.
- the component mounting machine 1 corresponds to an example of the “component mounting machine” of the present invention
- the mounting head 4 corresponds to an example of the “mounting head” of the present invention
- the imaging control unit 140 The component supply unit 28 corresponds to an example of the “control unit” of the invention, and the component supply unit 28 corresponds to an example of the “component supply unit” of the present invention.
- the first imaging system 67A corresponds to an example of the “first imaging system” of the present invention
- the work position PA corresponds to an example of the “first imaging position” of the present invention
- the first illumination 65A corresponds to the present invention.
- the first optical filter 66A corresponds to an example of the “first filter” of the present invention
- the first imaging unit 64A corresponds to an example of the “first imaging unit” of the present invention.
- the first range 601A of the solid-state image sensor 601 corresponds to an example of the “first image sensor” of the present invention.
- the second imaging system 67B corresponds to an example of the “second imaging system” of the present invention
- the work position PB corresponds to an example of the “second imaging position” of the present invention
- the second illumination 65B corresponds to the present invention.
- the second optical filter 66B corresponds to an example of the “second filter” of the present invention
- the second imaging unit 64B corresponds to an example of the “second imaging unit” of the present invention.
- the second range 601B of the solid-state image sensor 601 corresponds to an example of the “second image sensor” of the present invention.
- each of the “first wavelength” and the “second wavelength” in the present invention may be changed from the blue wavelength and the red wavelength described above. That is, the wavelength of the light emitted by the first and second illuminations 65A and 65B and the wavelength of the light transmitted by the first and second optical filters 66A and 66B can be appropriately changed.
- the imaging timing of the nozzles 40 by the imaging systems 67A and 67B may be set as appropriate other than the above example.
- the influence of the illumination light used by each of the first and second imaging systems 67A and 67B on the imaging of each nozzle 40 is suppressed. Therefore, the first imaging system 67A may image the nozzle 40 at an appropriate timing according to the state of the imaging target nozzle 40 without particularly considering the timing at which the illumination light is illuminated by the second imaging system 67B. .
- the first imaging system 67A may perform imaging of the nozzle 40 as soon as the nozzle 40 at the work position PA rises to the ascending position Zu.
- the second imaging system 67B the nozzle 40 may be imaged at an appropriate timing.
- first and second optical filters 66A and 66B are provided are not limited to the above positions, and can be changed as appropriate. Therefore, for example, the first and second optical filters 66A and 66B may be provided so as to be fitted into the first and windows 62A and 62B, respectively.
- the positions where the first and second lights 65A and 65B are provided are not limited to the above positions. Further, it is not always necessary to provide the light diffusing member 5, and the nozzles 40 at the work positions PA and PB may be directly irradiated with the first and second illuminations 65A and 65B.
- the position where the nozzle 40 picks up and mounts the part and the position where the nozzle 40 images is matched. However, these positions may be different.
- the component mounter 1 of the above embodiment includes two imaging systems 67A and 67B.
- the component mounter 1 may include a single first imaging system 67A.
- the second light that irradiates the second imaging position different from the first imaging position with the light having the second wavelength different from the first wavelength.
- a second filter that allows transmission of light of a second wavelength while restricting transmission of light of a wavelength different from the second wavelength, and light incident from the second imaging position facing the second imaging position
- the image pickup apparatus further includes a second image pickup system having a second image pickup unit that receives light by the second image pickup element, the mounting head can position the nozzle at the second image pickup position, and the second image pickup system performs the second image pickup from the second illumination.
- the light that has passed through the second filter after being irradiated to the position is received by the second imaging element of the second imaging unit, thereby imaging the nozzle located at the second imaging position, and the first filter is light having the second wavelength.
- Limit the transmission of the second fill Chromatography, as to limit the transmission of light of the first wavelength may constitute a component mounting machine.
- the illumination light (first wavelength light and second wavelength light) used by each imaging system affects the imaging of each nozzle.
- the second imaging system in the same manner as the first imaging system, light different from the illumination light of the second wavelength passes through the second filter in the second imaging system, and the second imaging element. It is restrained to reach.
- the first filter of the first imaging system restricts transmission of light of the second wavelength used for illumination in the second imaging system, and the second filter of the second imaging system is used for illumination in the first imaging system. Limit transmission of light of one wavelength. Therefore, the influence of the illumination light used by each of the first and second imaging systems on the imaging of the nozzles of each other is suppressed, and the imaging of the nozzles is performed well in each of the first and second imaging systems. Is possible.
- the first imaging unit is disposed on one side of the mounting head and faces a first imaging position provided on the side surface on one side of the mounting head, and the second imaging unit is opposite to the one side of the mounting head.
- the first illumination is directed toward the first imaging position from the other side of the mounting head, opposite to the second imaging position provided on the other side of the mounting head.
- the component mounter may be configured such that the second illumination irradiates light from one side of the mounting head toward the second imaging position.
- the first imaging unit is disposed on one side of the mounting head and faces the first imaging position provided on the side surface on one side of the mounting head.
- the first illumination irradiates the first imaging position with light from the other side of the mounting head. Therefore, the first imaging system captures the light irradiated by the first illumination from the back surface of the nozzle at the first imaging position with the first imaging unit, and acquires the silhouette image of the nozzle.
- the second imaging system light emitted by the second illumination from the back surface of the nozzle at the second imaging position is imaged by the second imaging unit, and a silhouette image of the nozzle is acquired.
- the second illumination of the second imaging system is directed toward the mounting head from one side of the mounting head on which the first imaging unit of the first imaging system is arranged. Irradiate. Therefore, the light emitted from the second illumination of the second imaging system and reflected by the mounting head may enter the first imaging unit of the first imaging system and affect the imaging of the nozzles of the first imaging system. . Similarly, the light emitted from the first illumination of the first imaging system and reflected by the mounting head may enter the second imaging unit of the second imaging system and affect the imaging of the nozzles of the second imaging system. is there. On the other hand, since the influence of the illumination light used by each of the first and second imaging systems on the imaging of each nozzle is suppressed, the silhouette images of the nozzles in each of the first and second imaging systems. Can be imaged satisfactorily.
- the apparatus further includes a control unit that controls the first imaging system and the second imaging system, and the mounting head 2 satisfies the arrangement relationship in which one is located at the first imaging position and the other can be located at the second imaging position.
- the nozzles are arranged, and the control unit simultaneously executes imaging of the nozzle located at the first imaging position by the first imaging system and imaging of the nozzle located at the second imaging position by the second imaging system.
- a component mounter may be configured.
- the imaging of the nozzle located at the first imaging position by the first imaging system and the imaging of the nozzle located at the second imaging position by the second imaging system are simultaneously performed, the imaging of the nozzle is efficiently performed. Can be executed. In addition, since the influence of the illumination light used by each imaging system on the imaging of the nozzles of each other is suppressed, the imaging of the nozzles can be performed satisfactorily even when imaging of each imaging system is performed simultaneously.
- the mounting head is a rotary head capable of rotating the nozzle along a circumferential track centered on a predetermined rotation axis, and is arranged on the circumferential track at an angle of 180 degrees around the rotation shaft.
- N is an integer equal to or greater than 1
- 2 ⁇ N nozzles are arranged along a circumferential trajectory
- the first imaging position and the second imaging position are rotation axes.
- the two nozzles constituting the pair satisfy the above-described positional relationship and are simultaneously positioned at the first imaging position and the second imaging position, respectively, with a 180 degree interval from the center.
- the component mounter may be configured so that it is possible. Thereby, it is possible to efficiently image a plurality of nozzles held by the rotary head.
- the apparatus further includes a component supply unit that supplies components, and the mounting head performs suction of the components supplied by the component supply unit with two nozzles that satisfy the above arrangement relationship, and the control unit performs suction of the components.
- the component mounter may be configured to simultaneously image two nozzles positioned at the first imaging position and the second imaging position, respectively. With such a configuration, it is possible to efficiently image the suction state of the components of the two nozzles.
- the component mounter may be configured such that the first wavelength is a blue wavelength and the second wavelength is a red wavelength.
- the first filter can effectively limit the transmission of the second wavelength, and the second filter Transmission of one wavelength can be effectively limited. Therefore, it is possible to more reliably suppress the influence of the illumination light used by each of the first and second imaging systems on the imaging of the nozzles of each other.
- Imaging unit 60 DESCRIPTION OF SYMBOLS 1 ... Component mounting machine 28 ... Component supply part 4 ... Mounting head 6 ... Imaging unit 60 ... Camera 601 ... Solid-state image sensor 601A ... (1st range of solid-state image sensor) 601B ... 2nd range (of solid-state image sensor) 64A ... First imaging unit 64B ... second imaging unit 65A ... first illumination 65B ... second illumination 66A ... first optical filter 66B ... second optical filter 67A ... first imaging system 67B ... second imaging system PA ... working position PB ... Working position 140 ... Imaging control unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Operations Research (AREA)
- General Engineering & Computer Science (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
Description
28…部品供給部
4…実装ヘッド
6…撮像ユニット
60…カメラ
601…固体撮像素子
601A…(固体撮像素子の)第1範囲
601B…(固体撮像素子の)第2範囲
64A…第1撮像部
64B…第2撮像部
65A…第1照明
65B…第2照明
66A…第1光学フィルター
66B…第2光学フィルター
67A…第1撮像システム
67B…第2撮像システム
PA…作業位置
PB…作業位置
140…撮像制御部
Claims (8)
- 第1波長の光を第1撮像位置に向けて照射する第1照明、前記第1波長の光の透過を許容する一方で前記第1波長と異なる波長の光の透過を制限する第1フィルター、および前記第1撮像位置に対向して前記第1撮像位置から入射してきた光を第1撮像素子により受光する第1撮像部を有する第1撮像システムと、
ノズルにより部品を保持可能であり、前記第1撮像位置に前記ノズルを位置決め可能な実装ヘッドと
を備え、
前記第1撮像システムは、前記第1照明から前記第1撮像位置へ照射された後に前記第1フィルターを透過した光を前記第1撮像部の前記第1撮像素子により受光することで、前記第1撮像位置に位置する前記ノズルを撮像する部品実装機。 - 前記第1波長と異なる第2波長の光を前記第1撮像位置と異なる第2撮像位置に向けて照射する第2照明、前記第2波長の光の透過を許容する一方で前記第2波長と異なる波長の光の透過を制限する第2フィルター、および前記第2撮像位置に対向して前記第2撮像位置から入射してきた光を第2撮像素子により受光する第2撮像部を有する第2撮像システムをさらに備え、
前記実装ヘッドは、前記第2撮像位置に前記ノズルを位置決め可能であり、
前記第2撮像システムは、前記第2照明から前記第2撮像位置へ照射された後に前記第2フィルターを透過した光を前記第2撮像部の前記第2撮像素子により受光することで、前記第2撮像位置に位置する前記ノズルを撮像し、
前記第1フィルターは前記第2波長の光の透過を制限し、前記第2フィルターは前記第1波長の光の透過を制限する請求項1に記載の部品実装機。 - 前記第1撮像部は前記実装ヘッドの一方側に配置されて、前記実装ヘッドの前記一方側の側面に対して設けられた前記第1撮像位置に対向し、
前記第2撮像部は前記実装ヘッドの前記一方側の逆の他方側に配置されて、前記実装ヘッドの前記他方側の側面に対して設けられた前記第2撮像位置に対向し、
前記第1照明は前記実装ヘッドの前記他方側から前記第1撮像位置に向けて光を照射し、前記第2照明は前記実装ヘッドの前記一方側から前記第2撮像位置に向けて光を照射する請求項2に記載の部品実装機。 - 前記第1撮像システムおよび前記第2撮像システムを制御する制御部をさらに備え、
前記実装ヘッドでは、一方が前記第1撮像位置に位置すると同時に他方が前記第2撮像位置に位置できる配置関係を満たすように2個の前記ノズルが配置され、
前記制御部は、前記第1撮像システムによる前記第1撮像位置に位置する前記ノズルの撮像と、前記第2撮像システムによる前記第2撮像位置に位置する前記ノズルの撮像とを同時に実行する請求項2または3に記載の部品実装機。 - 前記実装ヘッドは、所定の回転軸を中心とする円周軌道に沿って前記ノズルを回転可能なロータリーヘッドであり、前記回転軸を中心として180度の角度を空けて前記円周軌道上に配置された2個の前記ノズルの対をN対(Nは1以上の整数)設けることで2×N個の前記ノズルを前記円周軌道に沿って配列し、
前記第1撮像位置と前記第2撮像位置とは、前記回転軸を中心として180度の間隔を空けて前記円周軌道に対して設けられ、
前記対を構成する前記2個のノズルが前記配置関係を満たして、それぞれ前記第1撮像位置と前記第2撮像位置とに同時に位置することが可能である請求項4に記載の部品実装機。 - 部品を供給する部品供給部をさらに備え、
前記実装ヘッドは前記部品供給部により供給された部品の吸着を、前記配置関係を満たす前記2個のノズルにより実行し、
前記制御部は、部品の吸着を実行して前記第1撮像位置と前記第2撮像位置とにそれぞれ位置する前記2個のノズルを同時に撮像する請求項4または5に記載の部品実装機。 - 前記第1波長は青色の波長であり、前記第2波長は赤色の波長である請求項2ないし6のいずれか一項に記載の部品実装機。
- 実装ヘッドが部品の保持に用いるノズルを撮像位置に位置させる工程と、
所定波長の光を撮像位置に向けて照射する工程と、
前記撮像位置に照射された後にフィルターを通過した光を撮像素子により受光することで前記撮像位置に位置する前記ノズルを撮像する工程と
を備え、
前記フィルターは、前記所定波長の光の透過を許容する一方で前記所定波長と異なる波長の光の透過を制限するノズル撮像方法。
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US15/747,063 US10568251B2 (en) | 2015-08-31 | 2015-08-31 | Component mounter, nozzle imaging method |
CN201580080821.3A CN108141998B (zh) | 2015-08-31 | 2015-08-31 | 元件安装机、吸嘴拍摄方法 |
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