JP2012182333A - Imaging apparatus and imaging method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus and an imaging method which can prevent an increase in mounting tact of a component mounter by imaging an insertion component in a short time.SOLUTION: An imaging apparatus comprises: a first illuminating device 32, in the case where a component 4 absorbed by a suction nozzle 17 and transferred to an imaging visual field Rg is a surface-mounting component 4a, irradiating an undersurface of the component 4 with light obliquely from below; and a second illuminating device 33, in the case where a component 4 absorbed by the suction nozzle 17 and transferred to the imaging visual field Rg is an insertion component 4b, irradiating only a lower extended part 4F of the component 4 with light at an irradiation angle closer to horizontal direction irradiation than an irradiation angle of the light irradiated by the first illumination device 32. Irradiation of the component 4 by the first illuminating device 32 and irradiation of the component 4 by the second illuminating device 33 are switched depending on whether the component 4 is the surface mounting component 4a or the insertion component 4b.

Description

  The present invention relates to an imaging apparatus that is provided in a component mounting apparatus that moves a suction nozzle that sucks a component and mounts the component on a substrate, and performs imaging of the component sucked by the suction nozzle.

  The component mounting apparatus moves a suction nozzle that sucks a component and mounts the component on a substrate positioned by a substrate positioning unit such as a transfer conveyor. Such a component mounting apparatus includes an imaging device (imaging means) that captures an image of the component sucked by the suction nozzle from below, and recognizes the posture of the component by performing image recognition of the component based on the obtained image. Thus, the component can be accurately mounted at a predetermined position on the board in a predetermined posture. Here, ascertaining the posture of the component is not limited to a surface mount component in which the component is surface-mounted on the surface of the substrate (a component having a bent electrode portion that is in contact with the surface of the substrate, a chip resistor, a chip capacitor, etc. (Including chip parts), the illumination is performed by illuminating the lower surface of the part with an illuminating device that emits light from obliquely below the part, recognizing the position of the electrode part, etc. In the case of an insertion part having a downward extension part (for example, a part extending downward from a part such as a linear electrode part or insertion piece that passes through the substrate in the thickness direction), the downward extension part This is performed by illuminating only the downwardly extending portion with an illuminating device that irradiates light in a direction orthogonal to the longitudinal direction of the portion (horizontal direction) and recognizing the position of the insertion component (for example, Patent Document 1) ).

Japanese Patent No. 4576062

  However, in an imaging apparatus provided with an illuminating device that irradiates light in the horizontal direction, it is impossible to illuminate a part located above the imaging apparatus. In order to perform the operation, it is necessary to lower the suction nozzle that sucks the component so that the downward extending portion enters the inside of the imaging device, and accordingly, the time required for imaging the component becomes longer and the mounting tact time is reduced. There is a problem that the productivity increases and the productivity of the substrate decreases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an imaging apparatus and an imaging method capable of preventing an increase in mounting tact of a component mounting apparatus by imaging an inserted part in a short time.

  The imaging apparatus according to claim 1 is provided in a component mounting apparatus that moves a suction nozzle that sucks a component and mounts the component on a substrate, and moves the suction nozzle so that the component is positioned in the imaging field of view. In an imaging device for imaging a component adsorbed by the adsorption nozzle in the state from below, when the component adsorbed by the adsorption nozzle and positioned in the imaging field of view is a surface-mounted component that is surface-mounted on the surface of the substrate, A first illuminating means for illuminating the part from below and illuminating the lower surface of the part; and a lower extension part where the part adsorbed by the suction nozzle and located in the imaging field extends downward. In the case of the inserted part having the first part, the part is irradiated with light at an irradiation angle closer to the horizontal direction irradiation than the light irradiation angle by the first illumination means to illuminate only the downward extension part of the part. 2 lighting means and suction nozzle Illumination switching means for switching between illumination of the component by the first illumination means and illumination of the component by the second illumination means according to whether the worn component is a surface-mounted component or an insertion component; And an imaging execution means for imaging the part illuminated by the illumination means or the second illumination means.

  The imaging apparatus according to claim 2 is the imaging apparatus according to claim 1, wherein the same component in the imaging field of view is used regardless of whether the component sucked by the suction nozzle is a surface-mounted component or an insertion component. The part is imaged at the imaging height.

  The image pickup apparatus according to claim 3 is the image pickup apparatus according to claim 1 or 2, wherein the light emitted from the first illumination unit includes diffused light, and the light emitted from the second illumination unit. Consists of parallel or convergent light.

  An imaging device according to a fourth aspect is the imaging device according to any one of the first to third aspects, wherein the second illumination unit is provided at a position higher than the first illumination unit.

  The imaging method according to claim 5 is provided in a component mounting apparatus that moves a suction nozzle that sucks a component and mounts the component on a substrate, and the component that is sucked by the suction nozzle and positioned in the imaging field of view is located on the substrate. In the case of a surface-mounted component that is surface-mounted on the surface, the component is adsorbed by the first illumination means and the adsorption nozzle that illuminate the lower surface of the component by irradiating light from obliquely below and positioned in the imaging field of view. If the part is an insertion part having a downward extending part that extends downward, the part is irradiated with light at an irradiation angle closer to the horizontal direction irradiation than the light irradiation angle by the first illumination means. The second illuminating means for illuminating only the lower extension part of the component is provided, and the component adsorbed by the adsorption nozzle is imaged from below while the adsorption nozzle is moved so that the component is positioned in the imaging field of view. An imaging method using an imaging device A step of switching between illumination of the component by the first illumination means and illumination of the component by the second illumination means according to whether the component adsorbed by the adsorption nozzle is a surface mounting component or an insertion component; Imaging a component illuminated by the first illumination means or the second illumination means.

  The imaging method according to claim 6 is the imaging method according to claim 5, wherein the same component in the imaging field of view is used regardless of whether the component sucked by the suction nozzle is a surface-mounted component or an insertion component. The part is imaged at the imaging height.

  The image pickup method according to claim 7 is the image pickup method according to claim 5 or 6, wherein the light emitted from the first illumination means is composed of diffused light and the light emitted from the second illumination means. Consists of parallel or convergent light.

  An imaging method according to an eighth aspect is the imaging method according to any one of the fifth to seventh aspects, wherein the second illumination means is provided at a position higher than the first illumination means.

  In the present invention, in addition to the first illumination means for illuminating the lower surface of the surface-mounted component by irradiating the surface-mounted component positioned in the imaging field from obliquely below, the lower side of the insertion component positioned in the imaging field As an illuminating means for illuminating only the extending portion, a second illuminating means for irradiating light at an irradiation angle closer to the horizontal direction irradiation than the light irradiation angle by the first illuminating means (that is, not horizontal direction irradiation) is provided. In both the case where the component is illuminated by the first illumination means and the case where the component is illuminated by the second illumination means, the imaging area of the component can be set at a position above the imaging device. Since the parts picked up at the same height in the field of view can be picked up regardless of whether the picked-up part is a surface-mounted part or an inserted part, Equipment When positioned within the image field of view, there is no need to temporarily stop the horizontal movement of the suction nozzle and then lower the suction nozzle. Can be prevented from increasing. In addition, a first illumination unit for imaging the surface mount component and a second illumination unit for imaging the insert component are provided, and the image of the insert component is the same as that of the surface mount component. Since it can be performed at a height, the operation of the suction nozzle during imaging of the component can be made constant regardless of whether the component is a surface-mounted component or an inserted component.

The top view of the component mounting apparatus in one embodiment of this invention The side view of the component mounting apparatus in one embodiment of this invention (A) Perspective view of surface-mounted component mounted on substrate by component mounting apparatus in one embodiment of the present invention (b) Perspective view of insertion component mounted on substrate by component mounting apparatus in one embodiment of the present invention Figure The block diagram which shows the control system of the component mounting apparatus in one embodiment of this invention The side view of the component camera with which the component real phase apparatus in one embodiment of this invention is provided The top view of the component camera in one embodiment of this invention The side view of the component camera in one embodiment of this invention The side view of the component camera in one embodiment of this invention (A) (b) The figure which shows an example of the image data of the surface mounted component imaged with the component camera in one embodiment of this invention (A) (b) The figure which shows an example of the image data of the insertion component imaged with the component camera in one embodiment of this invention The flowchart which shows the advancing procedure of the component mounting process which the component mounting apparatus in one embodiment of this invention performs

  Embodiments of the present invention will be described below with reference to the drawings. The component mounting apparatus 1 shown in FIGS. 1 and 2 performs a series of operations including loading and positioning of the substrate 2, mounting of the component 4 on the electrode 3 on the positioned substrate 2, and unloading of the substrate 2 on which the component 4 is mounted. It is a device that executes repeatedly. In the present embodiment, the conveyance direction (arrow A shown in FIG. 1) of the substrate 2 in the component mounting apparatus 1 is the X-axis direction, and the horizontal plane direction orthogonal to the X-axis direction is the Y-axis direction (front-rear direction). Let the direction be the Z-axis direction. Further, in the Y-axis direction (front-rear direction), the side where the operator OP is normally located with respect to the component mounting apparatus 1 (downward in the drawing in FIG. 1) is the front, and the opposite side is the rear.

  1 and 2, the component mounting apparatus 1 is provided on a base 11 and is a conveyor 11 as a board positioning unit that transports the board 2 and positions the board 2 at a predetermined work position (position shown in FIG. 1). A plurality of tape feeders 13 and tray feeders 14 serving as component supply means for supplying the components 4, an orthogonal coordinate type head moving robot 15 provided on the base 11, and the head moving robot 15 are moved in a horizontal plane. Two mounting heads 16, each mounting head 16 can be moved up and down and rotatable about a vertical axis, and suction nozzle 17 that sucks the component 4 supplied from the tape feeder 13 and the tray feeder 14 is provided in each mounting head 16. Two component cameras 19 (imaging devices) provided at both positions across the substrate camera 18 and the conveyor 11 on the base 11. To have.

  1 and 2, the transfer conveyor 12 is composed of a pair of belt conveyors provided on the base 11 so as to extend in the X-axis direction, and supports the substrate 2 in a state where both ends in the Y-axis direction of the substrate 2 are supported from below. Is conveyed in the X-axis direction.

  1 and 2, a plurality of tape feeders 13 are installed on a carriage 13 </ b> C attached by an operator OP on the front side of the base 11, and each tape feeder 13 is provided at an end on the center side of the base 11. The component 4 is continuously supplied to the component supply port 13p. The tray feeder 14 is attached to the rear side of the base 11 by the operator OP, and supplies the component 4 by the tray 14t that accommodates the component 4.

  In the present embodiment, the component 4 supplied by each tape feeder 13 includes, as shown in FIG. 3A, for example, a plurality of bent electrode portions 4D that are in contact with the surface of the substrate 2 (16 here). The component 4 comprising the surface-mounted component 4a and supplied by the tray feeder 14 is, for example, a linearly downward extending portion that extends downward and is inserted into the substrate 2 as shown in FIG. The insertion part 4b includes a plurality of 4Fs (16 in this case).

  1 and 2, the head moving robot 15 is provided with a Y-axis table 15a that extends in the Y-axis direction above the transport conveyor 12, and is movably provided in the Y-axis direction on the Y-axis table 15a. Two X-axis tables 15b extending in the direction and two moving stages 15c provided on the respective X-axis tables 15b so as to be movable in the X-axis direction.

  Each moving stage 15c is attached to each of the two mounting heads 16, and operation of the head moving robot 15, that is, movement of the X-axis table 15b with respect to the Y-axis table 15a and movement of the moving stage 15c with respect to the X-axis table 15b. The upper part of the base 11 is moved in the horizontal direction by a combination of movements.

  In FIG. 1 and FIG. 2, the suction nozzle 17 provided in each mounting head 16 vacuum picks up and picks up the component 4 supplied from the tape feeder 13 or the tray feeder 14, and on the substrate 2 positioned by the transport conveyor 12. The component 4 is mounted on the substrate 2 by releasing the vacuum suction of the component 4 at a predetermined site (component mounting site) and detaching the component 4 from the suction nozzle 17.

  1 and 2, each substrate camera 18 has an imaging field of view directed downward, and when the substrate 2 is positioned at a work position by the transport conveyor 12, it is used for position detection of the substrate 2 provided on the substrate 2. A substrate mark (not shown) as a mark is imaged from above.

  In FIG. 1 and FIG. 2, each component camera 19 has an imaging field of view facing upward, is picked up by the mounting head 16, and images the component 4 positioned in the imaging field of view by moving the mounting head 16 from below.

  The substrate conveyor 2 is transported by the conveyor 12 and the positioning operation to the working position is performed by the operation of the conveyor driving mechanism 21 (FIG. 4) including an actuator not shown in the control device 20 (FIGS. 2 and 4) included in the component mounting apparatus 1. This is done by performing control.

  The supply of the component 4 to the component supply port 13p by the tape feeder 13 is performed when the control device 20 controls the operation of the tape feeder drive mechanism 22 (FIG. 4) including an actuator or the like (not shown). The control device 20 controls the operation of the tray feeder drive mechanism 23 (FIG. 4) including an actuator (not shown).

  The movement operation of each mounting head 16 in the horizontal plane direction is performed by the operation control of the robot drive mechanism 24 (FIG. 4) in which the control device 20 operates the head moving robot 15.

  The raising and lowering of each suction nozzle 17 with respect to the mounting head 16 and the rotation operation around the vertical axis are performed by the control device 20 controlling the operation of a nozzle drive mechanism 25 (FIG. 4) including an actuator (not shown). In the suction (pickup) and suction release (detachment) operations of the component 4 by the controller 20, the controller 20 controls the operation of the suction mechanism 26 (FIG. 4) including an actuator (not shown) to supply the vacuum pressure into the suction nozzle 17. , And by releasing the supply of vacuum pressure.

  The imaging operation control of each board camera 18 and the imaging operation control of each component camera 19 are performed by the control device 20 (FIG. 4). The image data obtained by the imaging operation of each board camera 18 and the image data obtained by the imaging operation of each component camera 19 are respectively sent to the control device 20, and in the image recognition unit 20a (FIG. 4) provided in the control device 20. Image recognition processing is performed.

  The present embodiment has a feature in the configuration of the component camera 19 and will be described below. As shown in FIGS. 5 and 6, each of the component cameras 19 includes a housing 31 provided on the base 11, a first lighting device 32, a second lighting device 33 provided in the housing 31, and lighting. A switching unit 34 and an imaging execution unit 35 are provided.

  5 and 6, a plurality of (in this case, four) first illumination devices 32 are provided so as to surround the vertical center axis J of the casing 31, and each is within the imaging field of view Rg of the component camera 19. Then, the component 4 positioned above the component camera 19 is irradiated with light from obliquely below (see the optical axis L1 of the first illumination device 32). The light emitted from each first illumination device 32 is composed of diffused light so that a wide range of illumination is possible, and illuminates the lower surface of the component 4 positioned in the imaging field of view Rg of the component camera 19 from below (FIG. 7). .

  In FIG. 5 and FIG. 6, a plurality of second illumination devices 33 are provided (here, six) so as to surround the vertical center axis J of the casing 31, and each of them is in the imaging field Rg above the component camera 19. 5 is irradiated with light at an angle θ2 (FIG. 5) closer to horizontal irradiation (irradiation toward the horizontal direction) than the light irradiation angle θ1 (FIG. 5) of each first illumination device 32. (See the optical axis L2 of the second illumination device 33). The light emitted from each second illumination device 33 is composed of parallel light or convergent light so that local illumination is possible, and the component 4 positioned in the imaging field of view Rg of the component camera 19 is the insertion component 4b. In addition, only the downward extension 4F (particularly the lower end of the downward extension 4F) of the insertion part 4b is illuminated (FIG. 8).

  Here, as shown in FIG. 5, the second illumination device 33 is provided at a position higher than the first illumination device 32 inside the housing 31 (however, a position that does not block light from the first illumination device 32). Thus, the entire component camera 19 has a compact configuration that does not spread laterally.

  The illumination switching unit 34 switches between the illumination of the component 4 by the first illumination device 32 and the illumination of the component 4 by the second illumination device 33 based on a command from the control device 20. Here, the control device 20 determines whether the component 4 sucked by the suction nozzle 17 is the surface mounting component 4a or the insertion component 4b based on the contents of the mounting program in which the component mounting work procedure is recorded. When the component 4 sucked by the suction nozzle 17 is a surface mount component 4a, a command to turn on the first lighting device 32 is output to the illumination switching unit 34, and the component 4 sucked by the suction nozzle 17 is output. When is the insertion part 4b, the illumination switching unit 34 outputs a command to turn on the second illumination device 33.

  The imaging execution unit 35 includes an imaging element including a line sensor (not shown), and is provided in the casing 31 so that the imaging optical axis K coincides with the vertical center axis J of the casing 31. The imaging execution unit 35 is controlled by the control device 20 and images the component 4 illuminated by the first illumination device 32 or the second illumination device 33 (FIG. 4).

  As described above, the illumination switching unit 34 determines whether the component 4 sucked by the suction nozzle 17, that is, the component 4 that is located in the imaging field of view Rg of the component camera 19 and is the imaging target is the surface mounting component 4 a. The imaging execution unit 35 functions as an illumination switching unit that switches between the illumination of the component 4 by the first illumination device 32 and the illumination of the component 4 by the second illumination device 33 according to whether it is 4b. Or it functions as an imaging execution means for imaging the component 4 illuminated by the second illumination device 33.

  The component camera 19 having such a configuration includes a first illumination device 32 that illuminates the lower surface of the surface mount component 4a by irradiating the surface mount component 4a located in the imaging visual field Rg obliquely from below. As illumination means for illuminating only the downward extension 4F of the insertion part 4b located in the imaging field of view Rg, the horizontal illumination is closer than the irradiation angle of light by the first illumination device 32 (as shown in FIG. 5) A second illumination device 33 that irradiates light at an illumination angle (which is smaller than the illumination angle of light by the first illumination device 32 instead of directional illumination), and the component 4 is illuminated by the first illumination device 32; In both cases where the component 4 is illuminated by the second illumination device 33 (that is, both in the case where the component 4 is the surface mount component 4a and in the case where the component 4 is the insertion component 4b), the part by the component camera 19 The fourth imaging region Ar (Fig. 5), can be set to a position above the component camera 19. For this reason, regardless of whether the component 4 sucked by the suction nozzle 17 is the surface mounting component 4a or the insertion component 4b, the component 4 has the same imaging height H (FIGS. 7 and 8) in the imaging field of view Rg. Imaging can be performed.

  9A and 9B, each electrode portion 4D appears brighter than the lower surface of the surface mounted component 4a when the imaging execution unit 35 performs imaging of the surface mounted component 4a whose lower surface is illuminated by the first lighting device 32. An image like this is obtained. Based on this image, the control device 20 can recognize the position of the electrode portion 4D included in the surface mount component 4a, and thereby can grasp the posture of the surface mount component 4a.

  In addition, when the imaging execution unit 35 performs imaging of the insertion part 4b in which only the lower extension part 4F is illuminated by the second illumination device 33, the lower surface of the insertion part 4b is dark because the light does not strike it. Images as shown in FIGS. 10A and 10B are obtained in which only the lower end of the downward extending portion 4F is brightly shining. Based on this image, the control device 20 can recognize the position of the downward extending portion 4F included in the insertion component 4b, and thereby can grasp the posture of the insertion component 4b.

  As described above, the control device 20 grasps the posture of the component 4 based on the image of the component 4 obtained by the imaging operation by the imaging execution unit 35, and whether or not an abnormal part is recognized in the component 4. Judgment is made. Here, the case where the abnormal part of the component 4 is recognized means that, for the surface mounting component 4a, for example, a bending or a defect is recognized in the electrode portion 4D, and the insertion component 4b is in the downward extending portion 4F. This refers to cases where bending or loss is observed.

  FIG. 9A is an example of an image in the case where all 16 electrode portions 4D included in the surface mount component 4a are not bent and all the electrode portions 4D are arranged in an orderly manner. In this case, the control is performed. The apparatus 20 determines that no abnormal portion is recognized in the surface mount component 4a. FIG. 9 (b) shows that one of the 16 electrode portions 4D (reference numeral 4Dp) is bent, and one electrode portion 4Dp where the bending occurs is compared to the other electrode portion 4D. In this case, the control device 20 determines that an abnormal portion is recognized in the surface mount component 4a.

  FIG. 10A is an example of an image in a case where all the 16 downward extending portions 4F included in the insertion part 4b are not bent and all the downward extending portions 4F are arranged in an orderly manner. In this case, the control device 20 determines that no abnormal portion is recognized in the insertion part 4b. FIG. 10 (b) shows that one of the 16 downward extending portions 4F (reference numeral is indicated by 4Fp) is bent, and one downward extending portion 4Fp where the bending occurs is the other lower portion. It is an example of an image in the case where it looks shifted with respect to the extension part 4F. In this case, the control device 20 determines that an abnormal part is recognized in the insertion part 4b.

  As a result of determining whether or not there is an abnormal portion in the component 4 sucked by the suction nozzle 17, the control device 20 determines that the suction nozzle is based on the grasped posture of the component 4 when no abnormal portion is found in the component 4. The suction nozzle 17 (the mounting head 16) is moved so that the component 4 adsorbed by 17 is accurately mounted on the component mounting portion on the substrate 2 positioned by the conveyor 12. On the other hand, the control device 20 discards the component 4 without mounting it on the substrate 2 when an abnormal part is recognized in the component 4 sucked by the suction nozzle 17.

  In the component mounting work by the component mounting apparatus 1 having such a configuration, the control device 20 first has the substrate 2 sent from another device (for example, a solder printer) arranged on the upstream side of the component mounting device 1. Is carried by the conveyor 12 and positioned at a predetermined work position (step ST1 shown in FIG. 11). Then, the head moving robot 15 is operated to move the substrate camera 18 (the mounting head 16) above the substrate 2, and the substrate camera 18 causes the substrate mark on the substrate 2 to be imaged to perform image recognition. The positional deviation from the normal work position is calculated (step ST2 shown in FIG. 11).

  After calculating the positional deviation of the substrate 2, the control device 20 operates the head moving robot 15 to move the mounting head 16 above the tape feeder 13, and the suction nozzle 17 is supplied to the component supply port 13 p of the tape feeder 13. Then, the vacuum pressure is supplied to the suction nozzle 17 by controlling the operation of the suction mechanism 26, and the component 4 is sucked and picked up by the suction nozzle 17 (step ST3 shown in FIG. 11). .

  The control device 20 determines from the contents of the mounting program or the like whether or not the component 4 currently sucked by the suction nozzle 17 is the insertion component 4b (step ST4 shown in FIG. 11). Then, when the component 4 currently sucked by the suction nozzle 17 is not the insertion component 4b (the surface mounting component 4a), the first illumination device 32 is turned on (step ST5 shown in FIG. 11), and the current suction is performed. When the component 4 attracted by the nozzle 17 is the insertion component 4b, the second illumination device 33 is turned on (step ST6 shown in FIG. 11).

  As described above, in steps ST4 to ST6, the illumination of the component 4 by the first illumination device 32 and the second are performed according to whether the component 4 sucked by the suction nozzle 17 is the surface mounting component 4a or the insertion component 4b. This is a process of switching the illumination of the component 4 by the illumination device 33.

  When the control device 20 turns on the first illumination device 32 or the second illumination device 33 according to whether or not the component 4 currently attracted by the suction nozzle 17 is the insertion component 4b, the control nozzle 20 turns the suction nozzle 17 ( The mounting head 16 is moved to position the component 4 within the imaging field of view Rg of the component camera 19, and the component camera 19 images the component 4 from below (step ST7 shown in FIG. 11).

  Here, imaging of the component 4 can be performed while performing a scanning operation of moving the suction nozzle 17 (mounting head 16) in the horizontal direction so that the component 4 crosses the component camera 19 in the horizontal direction. Conventionally, the suction nozzle 17 is lowered after temporarily stopping the movement of the suction nozzle 17 above the component camera 19, but an expensive area sensor has to be used for the imaging execution unit 35. In the component camera 19 according to the present embodiment, since a line sensor can be used for the imaging execution unit 35 in relation to the scan operation, the cost can be reduced.

  When the component camera 19 has imaged the component 4, the controller 20 recognizes the image data of the component 4 obtained by the imaging and determines whether or not an abnormal part is recognized in the component 4 (see FIG. Step ST8 shown in FIG. 11) As a result, when no abnormal part is recognized in the component 4, the posture of the component 4 with respect to the suction nozzle 17 is grasped, and the positional deviation (suction deviation) with respect to the suction nozzle 17 is calculated ( Step ST9 shown in FIG. Then, by moving the suction nozzle 17 (the mounting head 16) above the substrate 2 and controlling the operation of the nozzle drive mechanism 25, the component 4 sucked by the suction nozzle 17 is positioned on the substrate 2 positioned by the transport conveyor 12. Control of the suction mechanism 26 and the target mounting portion (the solder 3 is printed on the electrode 3 in the target mounting portion by the solder printing machine arranged on the upstream side of the component mounting apparatus 1). To cancel the supply of the vacuum pressure to the suction nozzle 17 and mount the component 4 on the substrate 2 (step ST10 shown in FIG. 11).

  Here, when mounting the component 4 on the substrate 2, the control device 20 considers the posture of the component 4 grasped in step ST <b> 9 and takes the position of the substrate 2 obtained by imaging the substrate mark by the substrate camera 18. The position correction (including rotation correction) of the suction nozzle 17 is performed so that the shift and the position shift (suction shift) of the component 4 with respect to the suction nozzle 17 obtained by imaging the component 4 by the component camera 19 are canceled. To do.

  As described above, after the component 4 is imaged by the component camera 19 that is an imaging device, the control device 20 grasps the posture of the component 4 based on the image obtained by the imaging, and based on the grasped posture. This is a mounting control means for mounting the component 4 on the substrate 2 positioned by the transport conveyor 12. Further, in step ST9 and step ST10, the posture of the component 4 is grasped based on the image obtained by the imaging by the component camera 19 in step ST7, and the component 4 is positioned by the conveyor 12 based on the grasped posture. This is a process of mounting on the substrate 2.

  On the other hand, when an abnormal part is recognized in the component 4 in step ST8, the control device 20 discards the component 4 sucked by the suction nozzle 17 to a predetermined component discarding position (not shown) (FIG. 11). Step ST11).

  When step ST10 or step ST11 is completed, the control device 20 determines whether or not all the components 4 to be mounted on the substrate 2 have been mounted on the substrate 2 (step ST12 shown in FIG. 11). If all the components 4 to be mounted on the substrate 2 have not been mounted on the substrate 2, the process returns to step ST3 to pick up the next component 4, and all the components 4 to be mounted on the substrate 2 are picked up. When the mounting of the component 4 on the substrate 2 has been completed, the transport conveyor 12 is operated, and the substrate 2 is placed on another device (for example, a post-mounting inspection machine) disposed on the downstream side of the component mounting device 1. It is carried out (step ST13 shown in FIG. 11).

  As described above, the component camera 19 provided in the component mounting apparatus 1 is the surface mount component 4a in which the component 4 that is sucked by the suction nozzle 17 and located in the imaging field of view Rg is surface-mounted on the surface of the substrate 2. In some cases, the component 4 (surface-mounted component 4a) is attracted to the first illumination device 32 and the suction nozzle 17 as first illumination means for illuminating the lower surface of the component 4 by irradiating light obliquely from below. When the component 4 located in the imaging field of view Rg is an insertion component 4b having a downward extension 4F extending downward, the light from the first illumination device 32 is applied to the component 4 (insertion component 4b). Only the downward extension 4F of the component 4 is illuminated by irradiating light at an irradiation angle that is closer to the horizontal direction irradiation than the irradiation angle (not horizontal direction irradiation but smaller than the light irradiation angle by the first illumination device 32). As the second lighting means 2 illumination device 33, illumination of component 4 by first illumination device 32 and component 4 by second illumination device 33 depending on whether component 4 adsorbed by adsorption nozzle 17 is surface mounting component 4a or insertion component 4b Provided with an illumination switching unit 34 as an illumination switching unit for switching the illumination and an imaging execution unit 35 as an imaging execution unit for imaging the component 4 illuminated by the first illumination device 32 or the second illumination device 33 It has become.

  In addition, the imaging method by the component camera 19 is based on whether the component 4 sucked by the suction nozzle 17 is the surface mounting component 4a or the insertion component 4b, and the second illumination of the component 4 by the first illumination device 32 and the second. Including a step of switching illumination of the component 4 by the illumination device 33 (step ST4 to step ST6) and a step of imaging the component 4 illuminated by the first illumination device 32 or the second illumination device 33 (step ST7). It has become.

  In the component camera 19 and the imaging method thereof in the present embodiment, as described above, both in the case where the component 4 is illuminated by the first illumination device 32 and in the case where the component 4 is illuminated by the second illumination device 33. 4 can be set at a position above the component camera 19, regardless of whether the component 4 sucked by the suction nozzle 17 is the surface mounting component 4 a or the insertion component 4 b. Since the component 4 can be imaged at the same imaging height H, the horizontal movement of the suction nozzle 17 is temporarily performed when the sucked component 4 is positioned in the imaging field of view of the component camera 19 as in the prior art. The operation of lowering the suction nozzle 17 after stopping is unnecessary, and the time required for imaging the inserted component 4b is shortened to prevent the mounting tact of the component mounting apparatus from increasing. It can be.

  In addition, a first illumination device 32 for imaging the surface mount component 4a and a second illumination device 33 for imaging the insert component 4b are provided side by side, and an image of the insert component 4b is captured by the surface mount component 4a. Since it can be performed at the same imaging height H as the case, the operation of the suction nozzle 17 at the time of imaging the component 4 is made constant regardless of whether the component 4 is the surface mounting component 4a or the insertion component 4b. be able to.

  In the imaging apparatus (component camera 19) and imaging method according to the present embodiment, the first type of component (for example, BGA) having a downward extending portion (bump) although it is a surface-mounted component. There may be cases where parts are imaged by irradiating light from both the illumination device 32 and the second illumination device 33.

  Provided are an imaging apparatus and an imaging method capable of preventing an increase in mounting tact of a component mounting apparatus by imaging an inserted part in a short time.

DESCRIPTION OF SYMBOLS 1 Component mounting apparatus 2 Board | substrate 4 Component 4a Surface mounting component 4b Insertion component 4F Downward extension part 17 Adsorption nozzle 19 Component camera (imaging device)
20 Control device (lighting switching means)
32 1st illumination device (1st illumination means)
33 Second illumination device (second illumination means)
34 Illumination switching unit (illumination switching means)
35 Imaging execution unit (imaging execution means)
Rg Imaging field of view H Imaging height

Claims (8)

A component mounting device that moves a suction nozzle that picks up a component and mounts the component on the board is equipped with a component that is sucked by the suction nozzle while the suction nozzle is moved so that the component is positioned within the imaging field of view. An imaging device for imaging from below,
When a component that is picked up by the suction nozzle and is located within the imaging field of view is a surface-mounted component that is surface-mounted on the surface of the substrate, the lower surface of the component is illuminated by irradiating light from obliquely below the component. 1 illumination means;
In the case where the component that is adsorbed by the adsorption nozzle and is located in the imaging field of view is an insertion component having a downward extending portion that extends downward, the light irradiation angle of the first illumination means with respect to that component A second illuminating means for illuminating only the downward extension of the component by irradiating light at an irradiation angle close to horizontal irradiation;
Illumination switching means for switching between illumination of the component by the first illumination means and illumination of the component by the second illumination means, depending on whether the component adsorbed by the adsorption nozzle is a surface mount component or an insertion component;
An imaging apparatus comprising: an imaging execution unit configured to image a part illuminated by the first illumination unit or the second illumination unit.   2. The imaging apparatus according to claim 1, wherein the imaging of the component is performed at the same imaging height within the imaging field regardless of whether the component sucked by the suction nozzle is a surface-mounted component or an insertion component. .   The imaging apparatus according to claim 1 or 2, wherein the light emitted from the first illumination means is composed of diffused light, and the light emitted from the second illumination means is comprised of parallel light or convergent light.   The imaging device according to claim 1, wherein the second illumination unit is provided at a position higher than the first illumination unit. This is a surface mount component that is mounted on a component mounting device that moves a suction nozzle that sucks a component and mounts the component on the board. In some cases, the first illumination means for illuminating the part from below and illuminating the lower surface of the part and the lower extension of the part that is adsorbed by the suction nozzle and located in the imaging field extends downward. In the case of an insertion part having a protruding part, only the downwardly extending part of the part is irradiated by irradiating the part with light at an irradiation angle closer to the horizontal direction irradiation than the light irradiation angle by the first illumination means. An imaging method by an imaging device that has a second illumination means for illuminating and images a component adsorbed by the adsorption nozzle from below in a state in which the adsorption nozzle is moved so that the component is positioned in an imaging field of view,
Switching between illumination of the component by the first illumination means and illumination of the component by the second illumination means according to whether the component adsorbed by the adsorption nozzle is a surface-mounted component or an insertion component;
Imaging a component illuminated by the first illumination means or the second illumination means.   6. The imaging method according to claim 5, wherein imaging of the component is performed at the same imaging height within the imaging field regardless of whether the component sucked by the suction nozzle is a surface-mounted component or an inserted component. .   The imaging method according to claim 5 or 6, wherein the light emitted from the first illumination means comprises diffused light, and the light emitted from the second illumination means comprises parallel light or convergent light.   The imaging method according to claim 5, wherein the second illuminating unit is provided at a position higher than the first illuminating unit.

Images