JP2012216668A - Component mounting device and imaging method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component mounting device which can achieve improvement in productivity of a mounting board by simultaneously imaging a plurality of components at high accuracy to reduce recognition processing time of the component.SOLUTION: A component mounting device 200 recognizes a first component 31 and a second component 32 by imaging the first component 31 and the second component by a component recognition camera 214 and mounts the first component 31 and the second component 32 on a substrate 20. The component recognition camera 214 includes a first imaging part 371 imaging the first component 31 by using first light, a second imaging part 372 imaging the second component 32 by using second light, a first transmission part 361 arranged on a route along which a second light component travels toward the first imaging part 371 for allowing a first light component to be selectively transmitted, and a second transmission part 362 arranged on a route along which a first light component travels toward the second imaging part 372 for allowing the second light component to be selectively transmitted. At least one of transmission regions, which are a transmission region where the first transmission part 361 allows the first light component to be transmitted and a transmission region where the second transmission part 362 allows the second light component to be transmitted, is changeable in size.

Description

  The present invention relates to a component mounting apparatus and an imaging method for imaging and recognizing a plurality of components held by a head and mounting the components on a substrate.

  2. Description of the Related Art Conventionally, a component mounting apparatus that holds a component with a head and mounts the component on a substrate is known. This component mounting apparatus includes a camera that captures an image of the component held by the head, and the component is accurately mounted on the substrate by imaging and recognizing the component with the camera. For this reason, in order to accurately mount the component on the board, it is important to accurately capture the component with the camera.

  In addition, in order to improve the productivity of a mounting board on which components are mounted, it is necessary to reduce the recognition time of components by simultaneously imaging and recognizing a plurality of components with the camera. That is, in order to improve the productivity of the mounting board, it is necessary to accurately capture a plurality of components simultaneously with the camera.

  Therefore, a technique for reducing the mutual interference of the illumination light when imaging a plurality of parts simultaneously by transmitting the illumination light through the optical filter or the polarization filter is disclosed (for example, see Patent Document 1). . In this technology, an optical filter in which the central wavelengths of illumination light transmitted in close proximity to each other are separated so that interference can be ignored, or a polarization filter in which the polarization angle is separated to such an extent that interference of illumination light transmitted in close proximity to each other can be ignored. By selecting, it is possible to reduce the influence of mutual illuminance and take an image.

JP 2005-49629 A

  However, the above-described conventional technique has a problem that, depending on the parts to be imaged, it may not be possible to accurately image at the same time.

  Here, when imaging a component, it is necessary to perform light control under illumination conditions corresponding to each component to be imaged. For example, when the illumination is arranged below the component, an electronic component such as a BGA (Ball Grid Array) irradiates light from the upper illumination, and a chip component irradiates the light from the lower illumination for imaging. There is a need.

  For this reason, when imaging a plurality of components at the same time, a constraint condition arises that it is necessary to select components that can be imaged under the same illumination conditions. Deteriorating. In addition, when imaging parts with different illumination conditions at the same time, if each part is irradiated with illumination light under illumination conditions according to each part, unintended stray light (irradiation light from the illumination light emitted to other parts) Mutual interference) may occur. Even in the conventional technique, it is difficult to suppress this stray light.

  As described above, in the above-described conventional technique, it is impossible to accurately capture parts with different illumination conditions at the same time, and therefore it may not be possible to shorten the part recognition processing time and improve the mounting board productivity. There is a problem that there is.

  The present invention has been made to solve the above-described problem, and a component that can improve the productivity of a mounting board by shortening the component recognition processing time by simultaneously imaging a plurality of components with high accuracy. An object is to provide a mounting apparatus and an imaging method.

  In order to achieve the above object, a component mounting apparatus according to the present invention includes an imaging device, recognizes a first component and a second component held by a head by imaging with the imaging device, and mounts them on a substrate. The imaging apparatus uses a first light emitting unit that emits first light, a second light emitting unit that emits second light, and the first light emitted from the first light emitting unit. The second part held by the head using the first imaging part that images the first part held by the head and the second light emitted from the second light emitting part. And a second imaging unit that images the first light component, which is a part or all of the first light component, is disposed in a path toward the first imaging unit, and is different from the first light component The second light component which is a part or all of the second light component A first transmission unit that is disposed in a path toward the first imaging unit, and selectively transmits the first light component; and the second light component is disposed in a path toward the second imaging unit, and A first light component disposed on a path toward the second imaging unit, and a second transmission unit that selectively transmits the second light component, wherein the first transmission unit transmits the first light component. At least one of the transmissive region and the transmissive region through which the second transmissive portion transmits the second light component is configured to be changeable in size.

  According to this, the first transmission component selectively transmits the first light component of the first light, the first component is imaged, and the second transmission portion selectively selects the second light component of the second light. The second part is imaged through. The size of the transmission region of the first transmission part or the second transmission part can be changed. That is, the first light component irradiated to image the first component is transmitted to the first transmission unit, but the second light component irradiated to image the second component is transmitted through the first light component. Two light components are not transmitted. Further, the second light component of the second light irradiated for imaging the second component is transmitted to the second transmission part, but the first light of the first light irradiated for imaging the first component is transmitted. One light component is not transmitted. For this reason, when imaging parts with different illumination conditions at the same time, even if each part is irradiated with illumination light under the illumination condition according to each part, stray light from illumination light irradiated to other parts is suppressed. And the parts can be imaged with high accuracy at the same time. In addition, the first component is imaged using the first light component transmitted through the transmission region of the first transmission unit, and the second component is imaged using the second light component transmitted through the transmission region of the second transmission unit. Therefore, the size of a component that can be imaged depends on the size of the transmission region. For this reason, by enabling the size of the transmission region to be changed, it is possible to capture an image even when the first component or the second component is a large component. As a result, a plurality of components can be imaged simultaneously with high accuracy, so that it is possible to shorten the component recognition processing time and improve the productivity of the mounting board.

  Preferably, the imaging apparatus further includes first polarization that selectively transmits the first light component that is a light component having a first polarization angle among the first light emitted from the first light emitting unit. A second polarizing filter that selectively transmits the second light component, which is a light component having a second polarization angle different from the first polarization angle, of the second light emitted from the second light emitting unit; Is provided.

  According to this, among the first light emitted from the first light emitting unit, the first polarizing filter that selectively transmits the first light component having the first polarization angle, and the second light emitted from the second light emitting unit. A second polarizing filter that selectively transmits the second light component having the second polarization angle. That is, the first light for imaging the first component passes through the first polarizing filter, whereby the first light component is selectively transmitted, and the second light for imaging the second component is the second polarized light. By passing through the filter, the second light component is selectively transmitted. For this reason, in the first transmission unit, the first light component for imaging the first component is transmitted and the second light component for imaging the second component is not transmitted. The first light component for imaging the part arrives. As a result, when images of components under different illumination conditions are simultaneously imaged, stray light from illumination light applied to other components can be suppressed, and the components can be simultaneously imaged with high accuracy.

  Preferably, the first component is further disposed behind the first component and reflects the first light emitted from the first light emitting unit, and the second component is disposed behind the second component. A second reflecting portion that reflects the second light emitted by the light emitting portion, the first polarizing filter is disposed in front of the first reflecting portion, and the second polarizing filter is disposed on the second reflecting portion. Arranged forward.

  According to this, the Z axis of the first reflecting portion arranged behind the first component in the Z-axis direction (the direction in which the component is shaded with respect to the direction of incidence of light from the light emitting portion, hereinafter referred to as the rear). The first polarizing filter is disposed in front of the direction (the incident direction side of light from the light emitting unit or the light irradiating side, hereinafter referred to as the front), and the second reflecting unit disposed behind the second component. A second polarizing filter is disposed in front. For example, the first polarizing filter is attached to the front surface of the first reflecting portion behind the first component (the surface that receives incident light from the light emitting portion or the surface that irradiates light, hereinafter referred to as the front surface). The second polarizing filter is attached to the front surface of the second reflecting portion behind the second component. For this reason, the first light component of the first light is selectively transmitted by the first polarizing filter behind the first component, reflected by the first reflecting portion, and is reflected by the second polarizing filter behind the second component. The second light component of the two lights is selectively transmitted and reflected by the second reflecting portion. That is, the first light component reflected by the first reflecting portion disposed behind the first component held in the head in the Z-axis direction floats as a silhouette of the first component and is held by the head. The second light component reflected by the second reflecting portion arranged behind the second part in the Z-axis direction causes the shape of the second part to rise as a silhouette. In the first transmission unit, the first light component is transmitted and the second light component is not transmitted. Therefore, the first light component for imaging the first component reaches the first imaging unit. As a result, when images of components under different illumination conditions are simultaneously imaged, stray light from illumination light applied to other components can be suppressed, and the components can be simultaneously imaged with high accuracy.

  In order to achieve the above object, an imaging method according to the present invention is an imaging method in which an imaging device images a first object and a second object, and the first imaging unit included in the imaging device includes: A first light emitting step for emitting first light used for imaging the first object, and a second imaging unit included in the imaging device emits second light used for imaging the second object. A second light emitting step, and a size of a transmission region that transmits the first light component formed in a transmission portion that selectively transmits the first light component that is a part or all of the first light. A changing step for changing, and the first light component is arranged in a path toward the first imaging unit, and is a component different from the first light component and a part or all of the second light. A path of a second light component toward the first imaging unit The transmissive part arranged is a transmission step for selectively transmitting the first light component among the light components toward the first imaging unit, and the first light component transmitted in the transmission step is used. An imaging step of imaging the first object.

  Preferably, the first object is a first component held by a head included in a component mounting apparatus that mounts a component on a board, and the second object is held by the head. In the first light emitting step, the first imaging unit included in the imaging device included in the component mounting apparatus emits the first light used for imaging the first component, and the second light emitting step. In the light emitting step, the second imaging unit emits second light used for imaging the second component, and in the imaging step, the first light component is used to hold the first light that is held by the head. Image one part.

  According to this, the size of the transmission region of the transmission part is changed, the first light component is selectively transmitted, and the first object is imaged. That is, the first light component of the first light irradiated for imaging the first component is transmitted to the transmission part, but the second light of the second light irradiated for imaging the second component. The component is not permeated. For this reason, when imaging parts with different illumination conditions at the same time, even if each part is irradiated with illumination light under the illumination condition according to each part, stray light from illumination light irradiated to other parts is suppressed. And the parts can be imaged with high accuracy at the same time. In addition, since the first component is imaged using the first light component that has been transmitted through the transmissive region of the transmissive portion, the size of the component that can be imaged depends on the size of the transmissive region. For this reason, by enabling the size of the transmission region to be changed, it is possible to capture an image even when the first component is a large component. As a result, a plurality of components can be imaged simultaneously with high accuracy, so that it is possible to shorten the component recognition processing time and improve the productivity of the mounting board.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the component mounting apparatus which can aim at the productivity improvement of a mounting board by shortening the recognition process time of components by imaging a some component simultaneously with sufficient precision.

1 is an external view showing a configuration of a component mounting system including a component mounting apparatus according to the present embodiment. It is a top view which shows the main structures inside the component mounting apparatus concerning this Embodiment. It is a schematic diagram which shows the structure of the head concerning this Embodiment, and a component recognition camera. It is a schematic diagram which shows the structure of the upper stage illumination concerning this Embodiment. It is a schematic diagram which shows the structure of the middle back-and-front (X-axis direction) illumination concerning this Embodiment. It is a schematic diagram which shows the structure of the middle stage right-and-left (Y-axis direction) illumination concerning this Embodiment. It is a schematic diagram which shows the structure of the lower stage illumination concerning this Embodiment. It is a schematic diagram which shows the structure of the permeation | transmission filter concerning this Embodiment. It is a flowchart which shows the process which the components recognition camera concerning this Embodiment images a component. It is a figure explaining the process which the components recognition camera concerning this Embodiment images a component. It is a figure explaining the process which the components recognition camera concerning this Embodiment images a component with a lead. It is a figure explaining the process in which the components recognition camera concerning this Embodiment changes the magnitude | size of the permeation | transmission area | region of a permeation | transmission filter. It is a figure explaining the process in which the components recognition camera concerning this Embodiment changes the magnitude | size of the permeation | transmission area | region of a permeation | transmission filter. It is a figure which shows the structure of the components recognition camera concerning the modification 1 of this Embodiment. It is a figure which shows the structure of the components recognition camera concerning the modification 2 of this Embodiment. It is a figure which shows the structure of the components recognition camera concerning the modification 3 of this Embodiment.

  Hereinafter, a component mounting apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view showing a configuration of a component mounting system 10 including a component mounting apparatus according to the present embodiment.

  FIG. 2 is a plan view showing a main configuration inside the component mounting apparatus 200 according to the present embodiment.

  As shown in FIG. 1, the component mounting system 10 is a system that mounts components on a substrate 20 to produce a mounted substrate, and includes a control device 100 and a component mounting device 200.

  The control device 100 is a device that controls the operation of the component mounting apparatus 200, and is a computer such as a personal computer. The function of the control device 100 may be provided in the component mounting apparatus 200.

  The component mounting apparatus 200 mounts a component such as an electronic component on the substrate 20 in accordance with an instruction from the control device 100, and moves the substrate 20 from upstream to downstream in the substrate transport direction (X-axis direction in the present embodiment). Transport.

  Specifically, as shown in FIG. 2, the component mounting apparatus 200 includes two mounting units 210 that mount components on the substrate 20. The two mounting units 210 perform a mounting operation on one board 20 in cooperation with each other. The mounting unit 210 includes a component supply unit 211, a head 213, and a component recognition camera 214.

  The component supply unit 211 includes an array of a plurality of component cassettes 212 that store component tapes. The component tape is, for example, a plurality of components of the same component type arranged evenly on a tape (carrier tape) and supplied in a state of being wound around a reel or the like. The parts arranged on the part tape are, for example, BGA and chip parts.

  The head 213 includes a plurality of nozzles, sucks a component tape component housed in the component cassette 212 with the nozzle, conveys the sucked component onto the substrate 20, and mounts the component on the substrate 20. .

  The component recognition camera 214 is an imaging device that captures an image of a component held by the head 213 from below, and is used to recognize the component. Specifically, the component recognition camera 214 images the component sucked by the nozzle of the head 213, and inspects the suction state of the component two-dimensionally or three-dimensionally.

  FIG. 3 is a schematic diagram showing the configuration of the head 213 and the component recognition camera 214 according to the present embodiment.

  As shown in the figure, the head 213 includes a plurality of nozzles 220 that suck the component 30. In the figure, a total of eight nozzles 220 are provided, four (# 1 to # 4) in the X-axis direction and two (A row and B row) in the Y-axis direction. That is, the head 213 can pick up a maximum of eight components 30 from the component supply unit 211 at a time and mount them on the substrate 20.

  In the case of the present embodiment, the nozzle 220 is a nozzle that holds the component 30 by vacuum suction. Further, the head 213 includes a mechanism that causes the nozzles 220 to independently protrude and retract in the Z-axis direction, and has a function of holding and transporting the component 30 and mounting the component 30 on the substrate 20.

  The head 213 is not only a device for mounting the component 30 on the substrate 20, but also a head 213 for inspecting the component 30, a head 213 for applying a resin for bonding the component 30, and the like. Good.

  The head 213 further includes a reflection unit 230. The reflector 230 is an aluminum disk-shaped reflector that reflects light, and is located behind the component 30 in the Z-axis direction (vertical direction) as viewed from the component recognition camera 214 side that is attracted to the nozzle 220 (same figure). (Position higher than the component 30 sucked by the head 213 in the Z-axis upward direction). In addition, the reflection part 230 should just be able to reflect light, and a material and a shape are not limited to the disk shape made from aluminum.

  A film 240, which is a transparent sheet that suppresses the transmission of red light, is disposed in front of the reflecting portion 230 (the Z-axis downward direction shown in the figure). Specifically, the film 240 is affixed to the front surface of the reflection unit 230. Thereby, the infrared light is transmitted through the film 240 and reflected by the reflection unit 230, but the red light is suppressed from being transmitted by the film 240 and suppressed from reaching the reflection unit 230. 230 is not reflected.

  The component recognition camera 214 images the component 30 adsorbed by the nozzle 220. In the figure, the component recognition camera 214 simultaneously images the two components 30 adsorbed by the nozzles 220 in the A and B rows. Then, the head 213 moves relative to the X axis direction, which is the direction of the rows A and B of the plurality of nozzles 220, so that the component recognition camera 214 sequentially captures images from # 1 to # 4. . Here, the component recognition camera 214 will be described below on the assumption that the first component 31 and the second component 32 held by the head 213 are imaged.

  As shown in the figure, the component recognition camera 214 includes an upper stage illumination 310, a middle stage front and rear illumination 320, a middle stage left and right illumination 330, a lower stage illumination 340, an imaging optical unit 350, a transmission filter 360, and an imaging unit 370.

  The upper stage illumination 310 is LED (Light Emitting Diode) illumination arranged in the upper stage, and irradiates light from the lateral direction, the downward direction, or the like toward the component 30 sucked and held by the head 213. That is, the upper stage illumination 310 is arranged on the uppermost stage and irradiates light from the lateral direction of the first part 31 and the second part 32. In addition, the upper stage illumination 310 should just be illumination which emits light, and is not limited to LED illumination. The detailed configuration of the upper stage illumination 310 will be described later.

  The middle stage front / rear illumination 320 is LED illumination arranged before and after the middle stage (X-axis direction shown in the figure), and irradiates the component 30 with light. In other words, the middle stage front / rear illumination 320 is disposed below the front and rear end portions of the upper stage illumination 310, and irradiates light from the first component 31 and the second component 32 obliquely from the front and rear. The middle stage front and rear illumination 320 may be any illumination that emits light, and is not limited to LED illumination. The detailed configuration of the middle stage front and rear illumination 320 will be described later.

  The middle stage left / right illumination 330 is LED illumination arranged on the middle stage left / right (Y-axis direction shown in the figure), and irradiates the component 30 with light. That is, the middle stage left and right illumination 330 is disposed below the left and right ends of the upper stage illumination 310 and irradiates light from the left and right obliquely downward directions of the first component 31 and the second component 32. The middle left / right illumination 330 may be any illumination that emits light, and is not limited to LED illumination. The detailed configuration of the middle left / right illumination 330 will be described later.

  The lower stage illumination 340 is LED illumination arranged in the lower stage, and irradiates light from the lower direction toward the component 30 sucked and held by the head 213. In other words, the lower stage illumination 340 is disposed below the middle stage front and rear illumination 320 and the middle stage left and right illumination 330 and irradiates light from below the first component 31 and the second component 32. In addition, the lower stage illumination 340 should just be illumination which emits light, and is not limited to LED illumination. The detailed configuration of the lower illumination 340 will be described later.

  The imaging optical unit 350 is an optical system that is disposed below the lower stage illumination 340 and forms an image of light reflected from the first component 31, the second component 32, or the reflection unit 230.

  The transmission filter 360 is a filter that is disposed below the imaging optical unit 350 and selectively transmits some components of light incident from the imaging optical unit 350. The transmission filter 360 includes a first transmission unit 361 and a second transmission unit 362 that selectively transmit different light components in the left-right direction (the Y-axis direction shown in the drawing). The detailed configurations of the first transmission part 361 and the second transmission part 362 will be described later.

  The imaging unit 370 is an imaging element that is disposed below the transmission filter 360 and images the component 30 using light transmitted through the transmission filter 360. Specifically, the imaging unit 370 captures the first component 31 sucked and held by the nozzles 220 in the A row and the second component 32 sucked and held by the nozzles 220 in the B row from the lower one-dimensional. It is a CCD (Charge Coupled Device) camera. The imaging unit 370 includes a first imaging unit 371 and a second imaging unit 372.

  The first imaging unit 371 is disposed below the first transmission unit 361 and is held by the nozzles 220 in the A row of the head 213 using the light of the first light component transmitted by the first transmission unit 361. The first component 31 is imaged. The second imaging unit 372 is disposed below the second transmission unit 362 and is held by the nozzles 220 in the B row of the head 213 using the light of the second light component transmitted by the second transmission unit 362. The second part 32 is imaged.

  Next, detailed configurations of the upper illumination 310, the middle front / rear illumination 320, the middle left / right illumination 330, the lower illumination 340, and the transmission filter 360 included in the component recognition camera 214 will be described.

  FIG. 4 is a schematic diagram showing a configuration of the upper stage illumination 310 according to the present embodiment.

  As shown in the drawing, the upper stage illumination 310 is an annular illumination, and includes an upper stage first light emitting unit 311, an upper stage second light emitting unit 312, an upper stage first polarizing filter 313, and an upper stage second polarizing filter 314.

  The upper first light emitting unit 311 and the upper second light emitting unit 312 are alternately arranged to form an annular upper illumination 310, and emit light toward the inner side of the annular upper illumination 310. In the figure, 10 upper first light emitting units 311 and 10 upper second light emitting units 312 are alternately arranged. However, the number of upper first light emitting units 311 and upper second light emitting units 312 is the same. Can be any number.

  Each upper first light emitting unit 311 emits upper first light that is light for imaging the first component 31. Specifically, the upper first light emitting unit 311 emits red light toward the first component 31.

  Each upper second light emitting section 312 emits upper second light that is light for imaging the second component 32. Specifically, the upper second light emitting unit 312 emits red light toward the second component 32.

  The upper first polarizing filter 313 is a polarizing filter that selectively transmits the upper first light component that is the light component of the first polarization angle among the upper first light emitted by the upper first light emitting unit 311. Specifically, the upper first polarizing filter 313 is attached to the front surface of each upper first light emitting unit 311 (inside the annular upper illumination 310), and selectively selects, for example, a light component having a vertical polarization angle. Make it transparent.

  The upper second polarizing filter 314 selectively transmits the upper second light component, which is a light component having a second polarization angle different from the first polarization angle, among the upper second light emitted from the upper second light emitting unit 312. It is a polarizing filter. Specifically, the upper second polarizing filter 314 is affixed to the front surface of each upper second light emitting unit 312 (inside the annular upper lighting 310), and selectively selects, for example, a light component having a horizontal polarization angle. Make it transparent.

  FIG. 5 is a schematic diagram showing the configuration of the middle front / rear illumination 320 according to the present embodiment.

  As shown in the drawing, the middle stage front / rear illumination 320 is a flat illumination, and the middle stage infrared first light emitting part 321, the middle stage infrared second light emitting part 322, the middle stage red first light emitting part 323, and the middle stage red second light emitting part 323. A light emitting unit 324, a middle infrared first polarizing filter 325, a middle infrared second polarizing filter 326, a middle red first polarizing filter 327, and a middle red second polarizing filter 328 are provided.

  The middle infrared first light emitting unit 321 and the middle infrared second light emitting unit 322 are alternately arranged, and the middle red first light emitting unit 323 and the middle red second light emitting unit 324 are also arranged alternately. In the figure, three middle infrared first light emitting units 321 and three middle infrared second light emitting units 322 are alternately arranged, and three middle red first light emitting units 323 and three The middle red second light emitting units 324 are alternately arranged, but the middle infrared first light emitting unit 321, the middle infrared second light emitting unit 322, the middle red first light emitting unit 323, and the middle red second light emitting unit 324 are arranged. Any number of can be used.

  Each middle infrared first light emitting unit 321 emits middle infrared first light, which is light for imaging the first component 31. Specifically, the middle infrared first light emitting unit 321 emits infrared light toward the reflecting unit 230 behind the first component 31 in the Z-axis direction (vertical direction) viewed from the component recognition camera 214 side.

  Each middle-stage infrared second light emitting unit 322 emits middle-stage infrared second light that is light for imaging the second component 32. Specifically, the middle infrared second light emitting unit 322 emits infrared light toward the reflecting unit 230 behind the second component 32 in the Z-axis direction (vertical direction) viewed from the component recognition camera 214 side.

  Each middle red first light emitting unit 323 is arranged below the middle infrared first light emitting unit 321 and emits medium red first light that is light for imaging the first component 31. Specifically, the middle red first light emitting unit 323 emits red light toward the first component 31.

  Each middle red second light emitting unit 324 is disposed below the middle infrared second light emitting unit 322 and emits medium red second light that is light for imaging the second component 32. Specifically, the middle red second light emitting unit 324 emits red light toward the second component 32.

  The middle-stage infrared first polarizing filter 325 selectively selects the middle-stage infrared first light component that is the light component of the first polarization angle among the middle-stage infrared first light emitted from the middle-stage infrared first light emitting unit 321. It is a polarizing filter to transmit. Specifically, the middle-stage infrared first polarizing filter 325 is attached to the front surface of each middle-stage infrared first light emitting unit 321, for example, with respect to the infrared light emitted from the middle-stage infrared first light-emitting unit 321. A light component having a vertical polarization angle is selectively transmitted.

  The middle-stage infrared second polarization filter 326 is a middle-stage infrared second light that is a light component having a second polarization angle different from the first polarization angle among the middle-stage infrared second light emitted from the middle-stage infrared second light emitting unit 322. It is a polarizing filter that selectively transmits light components. Specifically, the middle-stage infrared second polarizing filter 326 is attached to the front surface of each middle-stage infrared second light-emitting unit 322, and for example, with respect to the infrared light emitted from the middle-stage infrared second light-emitting unit 322, A light component having a lateral polarization angle is selectively transmitted.

  The middle red first polarizing filter 327 selectively transmits the middle red first light component that is the light component of the first polarization angle among the middle red first light emitted from the middle red first light emitting unit 323. It is. Specifically, the middle red first polarizing filter 327 is attached to the front surface of each middle red first light emitting unit 323, and for example, vertically polarized light with respect to the red light emitted from the middle red first light emitting unit 323. The light component of the angle is selectively transmitted.

  The middle-stage red second polarizing filter 328 selects the middle-stage red second light component that is a light component having a second polarization angle different from the first polarization angle among the middle-stage red second light emitted from the middle-stage red second light emitting unit 324. It is a polarizing filter that transmits light. Specifically, the middle-stage red second polarizing filter 328 is attached to the front surface of each middle-stage red second light-emitting section 324, and for example, laterally polarized light with respect to the red light emitted from the middle-stage red second light-emitting section 324. The light component of the angle is selectively transmitted.

  FIG. 6 is a schematic diagram showing the configuration of the middle-stage left / right illumination 330 according to the present embodiment.

  As shown in the figure, the middle stage left / right illumination 330 is a flat illumination, and the middle stage left / right first light emitting unit 331, the middle stage left / right second light emitting unit 332, the middle stage left / right first polarizing filter 333 and the middle stage left / right second polarizing filter. 334.

  The middle left / right first light emitting unit 331 emits middle stage left / right first light which is light for imaging the first component 31. Specifically, the middle left and right first light emitting units 331 emit red light toward the first component 31 sucked and held by the nozzle 220.

  The middle-stage left / right second light emitting unit 332 is disposed on the side of the middle-stage left / right first light-emitting unit 331 and emits middle-stage left / right second light that is light for imaging the second component 32. Specifically, the middle left and right second light emitting units 332 emit red light toward the second component 32 sucked and held by the nozzle 220.

  The middle left / right first polarizing filter 333 selectively transmits the middle left / right first light component that is the light component of the first polarization angle among the middle left / right first light emitted from the middle left / right first light emitting unit 331. It is. Specifically, the middle left / right first polarizing filter 333 is attached to the front surface of the middle left / right first light emitting unit 331, and for example, light having a vertical polarization angle with respect to the light emitted from the middle left / right first light emitting unit 331. Permeate components selectively.

  The middle-stage left / right second polarizing filter 334 selects a middle-stage left / right second light component that is a light component having a second polarization angle different from the first polarization angle among the middle-stage left / right second light emitted by the middle-stage left / right second light emitting unit 332. It is a polarizing filter that transmits light. Specifically, the middle-stage left / right second polarizing filter 334 is attached to the front surface of the middle-stage left / right second light emitting unit 332, and for example, light having a polarization angle in the horizontal direction with respect to the light emitted from the middle stage left / right second light-emitting unit 332 Permeate components selectively.

  In the figure, one middle left and right first light emitting part 331 and one middle left and right second light emitting part 332 are arranged, but a plurality of middle stage left and right first light emitting parts 331 and a plurality of middle stages are arranged. The left and right second light emitting units 332 may be alternately arranged. In this case, the middle-stage left / right first polarizing filter 333 and the middle-stage left / right second polarizing filter 334 are attached to the front surfaces of the middle-stage left / right first light-emitting section 331 and the middle-stage left / right second light-emitting section 332, respectively.

  FIG. 7 is a schematic diagram showing the configuration of the lower illumination 340 according to the present embodiment.

  As shown in the figure, the lower illumination 340 is a flat illumination, and includes a lower first light emitting unit 341, a lower second light emitting unit 342, a lower first polarizing filter 343, and a lower second polarizing filter 344. .

  The lower first light emitting unit 341 and the lower second light emitting unit 342 are alternately arranged and emit light upward (in the Z-axis direction shown in the figure). In the figure, two lower first light emitting portions 341 and three lower second light emitting portions 342 are alternately arranged in the Y axis direction, and two rows are formed in the X axis direction. Any number of the lower first light emitting units 341 and the lower second light emitting units 342 may be arranged, and any number of rows may be formed.

  Each lower first light emitting unit 341 emits lower first light that is light for imaging the first component 31. Specifically, the lower first light emitting unit 341 emits red light toward the first component 31.

  Each lower second light emitting unit 342 emits lower second light that is light for imaging the second component 32. Specifically, the lower second light emitting unit 342 emits red light toward the second component 32.

  The lower first polarizing filter 343 is a polarizing filter that selectively transmits the lower first light component that is the light component of the first polarization angle among the lower first light emitted by the lower first light emitting unit 341. Specifically, the lower first polarizing filter 343 is attached to the front surface (upper surface) of each lower first light emitting unit 341 and selectively transmits a light component having a vertical polarization angle.

  The lower second polarizing filter 344 selectively transmits a lower second light component that is a light component having a second polarization angle different from the first polarization angle out of the lower second light emitted from the lower second light emitting unit 342. It is a polarizing filter. Specifically, the lower second polarizing filter 344 is attached to the front surface (upper surface) of each lower second light emitting unit 342 and selectively transmits the light component having the horizontal polarization angle.

  FIG. 8 is a schematic diagram showing the configuration of the transmission filter 360 according to the present embodiment.

  As shown in the figure, the transmission filter 360 includes a first transmission part 361 and a second transmission part 362.

  The first transmission part 361 is a component different from the first light component while the first light component, which is a part or all of the first light, is disposed on the path toward the first imaging part 371. A second light component, which is a part or all of the second light component, is disposed in a path toward the first imaging unit 371 and selectively transmits the first light component. Here, the first transmission unit 361 is a transmission filter that selectively transmits a light component having a vertical polarization angle.

  Here, the first light refers to the upper first light emitted from the upper first light emitting unit 311, the middle infrared first light emitted from the middle infrared first light emitting unit 321, and the middle red light emitted from the middle red first light emitting unit 323. The first light, the middle left and right first light emitted from the middle left and right first light emitting unit 331, or the lower first light emitted from the lower first light emitting unit 341.

  The first light component is an upper first light component transmitted through the upper first polarizing filter 313, a middle infrared first light component transmitted through the middle infrared first polarizing filter 325, and a middle red first polarizing filter 327. Is the middle red first light component that has passed through, the middle left and right first light component that has passed through the middle left and right first polarizing filter 333, or the lower first light component that has passed through the lower first polarizing filter 343. That is, the first light component is a part of the first light.

  The second light includes the upper second light emitted from the upper second light emitting unit 312, the middle infrared second light emitted from the middle infrared second light emitting unit 322, and the middle red second light emitted from the middle red second light emitting unit 324. Second light, middle right and left second light emitted from the middle right and left second light emitting unit 332, or lower second light emitted from the lower second light emitting unit 342.

  The second light component includes the upper second light component transmitted through the upper second polarizing filter 314, the middle infrared second light component transmitted through the middle infrared second polarizing filter 326, and the middle red second polarizing filter 328. The middle-stage red second light component transmitted through the middle stage, the middle-stage left-right second light component transmitted through the middle-stage left-right second polarizing filter 334, or the lower-stage second light component transmitted through the lower-stage second polarizing filter 344. That is, the second light component is a partial component of the second light.

  The second transmission unit 362 is arranged in a path where the second light component is directed toward the second imaging unit 372, and is arranged in a path where the first light component is directed toward the second imaging unit 372, and selectively selects the second light component. Make it transparent. Here, the second transmission unit 362 is a transmission filter that selectively transmits a light component having a horizontal polarization angle.

  In addition, at least one of the transmission region through which the first transmission unit 361 transmits the first light component and the transmission region through which the second transmission unit 362 transmits the second light component can be changed in size. Specifically, for example, the transmission region of the first transmission unit 361 and the transmission region of the second transmission unit 362 change when the transmission filter 360 is moved by moving means such as an air cylinder, a motor, and an electromagnetic coil. Details will be described later.

  The first imaging unit 371 uses the first light transmitted through the first transmission unit 361 to image the first component 31 held by the head 213, and the second imaging unit 372 includes the second transmission unit. Using the second light transmitted through 362, the second component 32 held by the head 213 is imaged.

  Next, a process in which the component recognition camera 214 captures and recognizes a component will be described.

  FIG. 9 is a flowchart showing processing in which the component recognition camera 214 according to the present embodiment images a component. FIG. 10 to FIG. 13 are diagrams for describing processing in which the component recognition camera 214 according to the present embodiment images a component. The following processing is performed by the component recognition camera 214 in accordance with an instruction from the control device 100 shown in FIG.

  As shown in FIG. 9, first, the size of the transmission region that transmits the first light component formed in the first transmission unit 361 and the second configuration formed in the second transmission unit 362 according to the component to be imaged. The size of the transmission region that transmits the light component is changed individually or relatively (S102).

  Specifically, as shown in FIG. 10, the component recognition camera 214 includes an air cylinder 380 that is a moving unit that moves the transmission filter 360. Then, the air cylinder 380 moves the transmission filter 360 so that the size of the transmission region that transmits the first light component formed in the first transmission part 361 and the second light formed in the second transmission part 362. Change the size of the transmission region that transmits the component. Details of the process of changing the size of the transparent area will be described later.

  In the figure, the air cylinder 380 is composed of one piece, but may be composed of a plurality of pieces so that the transmission regions of the first transmission part 361 and the second transmission part 362 can be changed. .

  Then, returning to FIG. 9, the first light used for imaging the first component 31 by the first imaging unit 371 and the second light used for imaging the second component 32 by the second imaging unit 372. (S104).

  Specifically, as shown in FIG. 10, for example, when the first component 31 held by the nozzle 220 in the A row of the head 213 is an electronic component such as a BGA, the first component 31 is imaged. The upper first light emitting unit 311 emits upper first light that is red light toward the first component 31 in the A row (one row). Further, when the second component 32 sucked and held by the nozzle 220 in the B row of the head 213 is a chip component, the lower second light emitting unit 342 is arranged in the B row (the other row) in order to image the second component 32. The second lower light, which is red light, is emitted toward the second component 32.

  Returning to FIG. 9, next, the polarizing filter selectively transmits the first light component and the second light component of the first light and the second light (S106).

  Specifically, as shown in FIG. 10, the upper first polarization filter 313 is an upper first light that is a light component having a vertical polarization angle among the upper first light emitted by the upper first light emitting unit 311. Permeate components selectively. In addition, the lower second polarizing filter 344 selectively transmits the lower second light component, which is a light component having a horizontal polarization angle, out of the lower second light emitted from the lower second light emitting unit 342.

  Returning to FIG. 9, next, the first transmission unit 361 selectively transmits the first light component among the light components directed to the first imaging unit 371, and the second transmission unit 362 transmits the second imaging unit 372. The second light component is selectively transmitted among the light components directed to (S108).

  Specifically, as shown in FIG. 10, the upper first light component emitted from the upper first light emitting unit 311 transmitted by the upper first polarizing filter 313 is reflected by the first component 31, and the first imaging unit Heading 371 (route A1 shown in the figure). Here, a part of the lower second light component emitted from the lower second light emitting unit 342 transmitted by the lower second polarizing filter 344 is also reflected by the first component 31 and travels toward the first imaging unit 371 (see FIG. Route A2) shown in FIG. In this case, the first transmission unit 361 does not transmit the lower second light component but transmits the upper first light component.

  Further, the lower second light component emitted from the lower second light emitting unit 342 transmitted through the lower second polarizing filter 344 is reflected by the second component 32 and travels toward the second imaging unit 372 (path B1 shown in FIG. ). Here, the upper first light component emitted from the upper first light emitting unit 311 transmitted by the upper first polarizing filter 313 is also reflected by the second component 32 and travels toward the second imaging unit 372 (see FIG. Route B2) shown in FIG. In this case, the second transmission unit 362 does not transmit the upper first light component but transmits the lower second light component.

  Returning to FIG. 9, the first imaging unit 371 images the first part 31 in the A row, and the second imaging unit 372 images the second component 32 in the B row (S110).

  Specifically, as illustrated in FIG. 10, the first imaging unit 371 uses the upper first light component transmitted through the first transmission unit 361 to hold the first component 31 held in the A row of the head 213. Image. The second imaging unit 372 images the second component 32 held in the B row of the head 213 using the lower second light component that has been transmitted through the second transmission unit 362.

  In addition, since the film 240 is affixed on the front surface of the reflection unit 230, transmission of red light to the reflection unit 230 side is suppressed. Therefore, the upper stage is red light emitted from the upper first light emitting unit 311. The first light and the lower second light that is the red light emitted from the lower second light emitting unit 342 are not reflected by the reflecting unit 230 disposed behind the component (upward in the Z-axis direction). For this reason, the first component 31 and the second component 32 can be imaged by using the light reflected by the first component 31 and the second component 32.

  In addition, in an electronic component such as a QFP (Quad Flat Package) or the like having an outer lead, a reflecting portion disposed behind the component rather than imaging the component using light reflected by the component. If the silhouette of the part is imaged using the reflected light from 230, the part can be recognized with high accuracy.

  For this reason, as shown in FIG. 11, when the first component 33, which is a lead-equipped component, is held on the head 213, the component recognition camera 214 uses the reflected light from the reflecting unit 230 to The silhouette of one part 33 is imaged. Here, FIG. 11 is a diagram for explaining processing in which the component recognition camera 214 according to the present embodiment images a component with leads.

  As shown in the figure, in order to image the first component 33 that is a leaded component, the middle infrared first light emitting portion 321 is directed toward the reflecting portion 230 behind the first component 33 in the A row toward the infrared light. The first middle infrared light is emitted. Moreover, in order to image the 2nd components 32 of B row | line | column, the middle stage infrared second light emission part 322 also emits the middle stage infrared second light which is infrared light.

  Then, the middle-stage infrared first polarizing filter 325 converts the middle-stage infrared first light component, which is the light component having the polarization angle in the vertical direction, from the middle-stage infrared first light emitted by the middle-stage infrared first light emitting unit 321. Selectively transmit. The middle-stage infrared second polarizing filter 326 also includes a middle-stage infrared second light component that is a light component having a horizontal polarization angle among the middle-stage infrared first light emitted from the middle-stage infrared second light emitting unit 322. Selectively transmit.

  Then, the middle-stage infrared first light component transmitted by the middle-stage infrared first polarizing filter 325 is reflected by the reflection unit 230 and travels toward the first imaging unit 371 (path A3 shown in the figure). Further, a part of the middle-stage infrared second light component transmitted by the middle-stage infrared second polarizing filter 326 is also reflected by the reflection unit 230 and travels toward the first imaging unit 371 (path A4 shown in the figure). In addition, although the film 240 is affixed on the front surface of the reflection part 230 on the light reflection side, the light emitted from the middle infrared first light emitting part 321 or the middle infrared second light emitting part 322 is infrared light. The infrared light passes through the film 240 and is reflected by the reflection unit 230.

  And in the 1st transmission part 361 which permeate | transmits the 1st light component which is a light component of the vertical polarization angle, a phase (polarization angle) with the 1st light component permeate | transmitted by the middle stage infrared 2nd polarizing filter 326 is. The second infrared light component, which is a different second light component, is not transmitted, but the first infrared light component transmitted through the first infrared first polarizing filter 325 is transmitted. Accordingly, the first imaging unit 371 images the silhouette of the first component 33 held by the nozzle 220 in the A row of the head 213 using the middle infrared first light component transmitted through the first transmission unit 361. To do.

  Next, processing for changing the size of the transmissive region formed in the transmissive filter 360 will be described.

  12 and 13 are diagrams for explaining processing in which the component recognition camera 214 according to the present embodiment changes the size of the transmission region of the transmission filter 360. FIG.

  As shown in FIG. 12, the nozzle 220 in each of the rows A and B of the head 213 holds, for example, a first component 34 that is a small component in the A row and a second component 35 that is a large component in the B row, for example. The first transmission part 361, which is a transmission part that transmits the first light component, in order to image the first part 34 of the small part held by the nozzle 220 in the A row, is changed to a small area. However, the transmission region of the second transmission part 362, which is a transmission part that transmits the second light component in order to image the second part 35 of the large part held by the nozzle 220 in the B row, is a large area. It is necessary to change to.

  For this reason, the air cylinder 380 moves the transmission filter 360 in the Y-axis direction, thereby reducing the transmission region of the first transmission unit 361 and increasing the transmission region of the second transmission unit 362. Accordingly, the first imaging unit 371 images the small first component 34 using the light of the first light component that has passed through the small transmission region of the first transmission unit 361, and the second imaging unit 372 The large second component 35 can be imaged using the light of the second light component that has passed through the large transmission region of the transmission part 362.

  As shown in FIG. 13, when the component 36, which is a larger component, is held by the nozzle 220 in the A row or B row of the head 213, the air cylinder 380 moves the transmission filter 360 to the imaging unit 370. It is further moved in the Y-axis direction so as not to overlap the imaging region. Here, since the part 36 is a large part, the head 213 can hold only one part 36.

  In this case, since the transmission filter 360 is not disposed in front of the imaging unit 370, the first light emitting unit and the second light emitting unit, which are the light emitting units included in the component recognition camera 214, emit light together, thereby causing the imaging unit 370 to emit light. The large component 36 can be imaged using the emitted light having different phases.

  The air cylinder 380 may move the transmission filter 360 in the X-axis direction so that the transmission filter 360 is not disposed in front of the imaging unit 370.

  As described above, according to the component mounting apparatus 200 according to the present embodiment, the size of the transmission region of the first transmission unit 361 is changed, the first light component is selectively transmitted, and the first component is Take an image. That is, the first transmission part 361 transmits the first light component of the first light irradiated for imaging the first component held by the nozzles 220 in the A row of the head 213, but the first light component of the head 213 is transmitted. The second light component of the second light irradiated for imaging the second component held by the nozzles 220 in the B row is not transmitted. For this reason, for example, when simultaneously imaging parts with different illumination conditions according to columns or for each column, even if each component is irradiated with illumination light under the illumination conditions according to each component, other components are irradiated. Stray light from the illuminated illumination light can be suppressed, and the part can be imaged with high accuracy at the same time. Further, since the first component is imaged using the first light component transmitted through the transmission region of the first transmission unit 361, the size of the component that can be imaged depends on the size of the transmission region. For this reason, by enabling the size of the transmission region to be changed, it is possible to capture an image even when the first component is a large component.

  In addition, the size of the transmission region of the second transmission unit 362 is changed to selectively transmit the second light component, and the second component held by the nozzle 220 in the B row of the head 213 is imaged. That is, the second light component of the second light irradiated for imaging the second part is transmitted to the second transmission unit 362, but the second light component irradiated for imaging the first part of the A row is transmitted. The first light component of one light is not transmitted. For this reason, even if the first component held by the nozzle 220 in the A row and the second component held by the nozzle 220 in the B row are under different illumination conditions, it is possible to capture images with high accuracy at the same time. In addition, since the size of the transmission region of the second transmission unit 362 can be changed, imaging can be performed even when the second component held by the nozzle 220 in the B row of the head 213 is a large component.

  In addition, the first polarizing filter that selectively transmits the first light component having the first polarization angle in the first light emitted from the first light emitting unit, and the second polarized light in the second light emitted from the second light emitting unit. A second polarizing filter that selectively transmits the second light component of the angle. That is, the first light for imaging the first component passes through the first polarizing filter, whereby the first light component is selectively transmitted, and the second light for imaging the second component is the second polarized light. By passing through the filter, the second light component is selectively transmitted. For this reason, in the 1st transmission part 361, since the 1st light component for imaging the 1st component of A row is permeate | transmitted, the 2nd light component for imaging the 2nd component of B row | line | column is not permeate | transmitted, The first light component for imaging the first component reaches one imaging unit 371. This makes it possible to suppress stray light from illumination light irradiated to other components in different rows when simultaneously imaging components with different illumination conditions for the A row and B row of the head 213.

  As a result, a plurality of components can be imaged simultaneously with high accuracy, so that it is possible to shorten the component recognition processing time and improve the productivity of the mounting board.

  Further, since the component can be irradiated with light from various angles under the control of the control device 100, the component can be imaged with high accuracy. Note that the control device 100 may have a function of controlling which light emitting unit emits light according to the component to be imaged.

  Here, a modified example of the present embodiment will be described below.

(Modification 1)
FIG. 14 is a diagram showing a configuration of a component recognition camera according to the first modification of the present embodiment.

  As shown in the figure, the transmission filter 360a of the component recognition camera according to the first modification includes a rectangular first transmission part 361a, a triangular first transmission part 361b, a rectangular second transmission part 362a, and a triangular second transmission part 362b. And the 3rd permeation | transmission part 363 is formed. The air cylinder 380 moves the transmission filter 360a in the X-axis direction.

  Here, the rectangular first transmission part 361a is a rectangular polarizing filter that selectively transmits a light component having a vertical polarization angle. The rectangular second transmission part 362a is a rectangular polarization filter that selectively transmits light components having a horizontal polarization angle. The rectangular first transmission part 361a and the rectangular second transmission part 362a are arranged with a predetermined gap therebetween.

  The triangular first transmission part 361b is a triangular polarizing filter that selectively transmits a light component having a vertical polarization angle. The triangular second transmission part 362b is an inverted triangular polarizing filter that selectively transmits a light component having a horizontal polarization angle. That is, the triangular first transmission part 361b and the triangular second transmission part 362b are two triangular polarizing filters that face each other when a rectangle (rectangular shape) is divided into two diagonal lines.

  The third transmission part 363 is a rectangular space formed in the transmission filter 360a.

  For example, when imaging the first component 31 and the second component 32 when the component sizes held by the head 213 as shown in FIG. 10 are not greatly different, the transmission filter 360 a is moved by the air cylinder 380 to the head 213. The plurality of nozzles 220 are moved in the X-axis direction, which is the row direction of the A row and the B row, and the rectangular first transmission portion 361 a and the rectangular second transmission portion 362 a are arranged in front of the imaging unit 370. Thereby, since the rectangular first transmission part 361a and the rectangular second transmission part 362a are arranged at an interval, the illumination light for imaging the first part 31 in the A row and the second part 32 in the B row is used. Interference can be further prevented.

  Further, when imaging the first part 34 in the A row and the second part 35 in the B row held by the head 213 as shown in FIG. 12, the air cylinder 380 causes the transmission filter 360 a to be connected to the plurality of heads 213. The nozzle 220 is moved in the X-axis direction, which is the row direction of the A row and the B row, and the triangular first transmission portion 361b and the triangular second transmission portion 362b are positioned in front of the imaging unit 370 as shown in FIG. Is placed. As a result, the transmission area for imaging the first part 34 with a small A row is small and the transmission area for imaging the second part 35 with a large B row is large. Can be imaged.

  If the first part in row A is a large part and the second part in row B is a small part, a diagram of the triangular first transmission part 361b and the triangular second transmission part 362b in front of the imaging unit 370 is shown. The air cylinder 380 may move the transmission filter 360a in the X-axis direction so that the position D shown in FIG.

  Further, when one large component 36 is imaged in a direction (Y-axis direction) orthogonal to the column direction held by the head 213 as shown in FIG. 13, the transmission filter 360 a is moved in the X-axis direction by the air cylinder 380. The third transmission part 363 is arranged in front of the imaging part 370. Thereby, the big component 36 can be imaged.

  Although the transmission filter 360a is moved in the X-axis direction, the boundary between the triangular first transmission part 361b and the triangular second transmission part 362b having different polarization angles of the triangular polarization filter can be moved, and the polarization filter If the area is sufficiently large, the transmission filter 360a may be moved in the Y-axis direction.

(Modification 2)
FIG. 15 is a diagram illustrating a configuration of a component recognition camera according to the second modification of the present embodiment.

  As shown in the figure, the middle front / rear illumination 320a of the component recognition camera 214a according to the second modification is arranged at the upper side of the middle front / rear illumination 320 of the embodiment shown in FIG. And the middle stage infrared second polarizing filter 326 is not provided. In addition, the other structure with which the middle stage front and rear illumination 320a is provided is the same as the structure of the middle stage front and rear illumination 320 in the above embodiment.

  In addition, the front surface of the film 240 attached to the first reflecting portion 231 that is the reflecting portion 230 on the A-line side of the nozzle 220 of the head 213 is a reflective second layer that selectively transmits a light component having a vertical polarization angle. A single polarization filter 251 is disposed. That is, the reflective first polarizing filter 251 is a polarizing filter that is disposed behind the first component and disposed in front of the first reflecting portion 231 that reflects the first light emitted from the first light emitting portion.

  Further, the front surface of the film 240 affixed to the second reflecting portion 232 which is the reflecting portion 230 on the B row side of the nozzle 220 of the head 213 is a reflective second layer that selectively transmits light components having a horizontal polarization angle. A two-polarization filter 252 is disposed. That is, the reflective second polarizing filter 252 is a polarizing filter that is disposed behind the second component and disposed in front of the second reflecting portion 232 that reflects the second light emitted from the second light emitting portion.

  The other configuration of the component recognition camera 214a is the same as the configuration of the component recognition camera 214 in the above embodiment. Here, the process in which the component recognition camera 214a according to the second modification of the present embodiment images the leaded component as illustrated in FIG. 11 in FIG. 15 will be described below.

  First, in order to image the first part 33 in the A row, which is a leaded part, the middle infrared first light emitting part 321 on the upper stage side is disposed in front of the reflecting part 230 behind the first part 33 in the A line. The middle stage infrared first light, which is infrared light, is emitted toward the reflected first polarizing filter 251. Further, in order to image the second part 37 in the B row, which is a leaded part, the upper middle infrared second light emitting part 322 is also reflected in front of the reflecting part 230 behind the second part 37. The middle stage infrared second light, which is infrared light, is emitted toward the second polarizing filter 252.

  Then, the reflective first polarizing filter 251 in the A column transmits the middle infrared first light emitted by the middle infrared first light emitting unit 321. The reflective second polarizing filter 252 transmits the middle-stage infrared second light emitted from the middle-stage infrared second light emitting unit 322.

  Then, the middle-stage infrared first light component transmitted by the reflective first polarizing filter 251 is reflected by the first reflecting unit 231 in the A column and travels toward the first image capturing unit 371 (path A5 shown in the figure). In addition, a part of the middle-stage infrared second light component transmitted by the reflective second polarizing filter 252 is also reflected by the second reflection unit 232 in the B row and travels toward the first imaging unit 371 (path illustrated in FIG. A6).

  Further, the middle-infrared second light component transmitted by the reflective second polarizing filter 252 in the B row is reflected by the second reflecting unit 232 and travels toward the second imaging unit 372 (path B3 shown in the figure). In addition, a part of the middle infrared first light component transmitted by the reflective first polarizing filter 251 is also reflected by the first reflecting unit 231 and travels toward the second imaging unit 372 (path B4 shown in the figure).

  In addition, although the film 240 is affixed on the front surface of the 1st reflection part 231 and the 2nd reflection part 232, the light which the middle stage infrared 1st light emission part 321 or the middle stage infrared 2nd light emission part 322 emits is infrared rays. Since it is light, it passes through the film 240, and the infrared light is reflected by the first reflecting portion 231 and the second reflecting portion 232.

  The first transmission unit 361 does not transmit the middle-stage infrared second light component transmitted by the B-line reflection second polarization filter 252 and transmits the middle-stage infrared light transmitted by the A-line reflection first polarization filter 251. The first light component is transmitted. The second transmission unit 362 does not transmit the middle infrared first light component transmitted by the reflective first polarizing filter 251 but transmits the middle infrared second light component transmitted by the reflective second polarizing filter 252. Let

  Accordingly, the first imaging unit 371 images the silhouette of the first component 33 held by the nozzle 220 in the A row of the head 213 using the middle infrared first light component transmitted through the first transmission unit 361. To do. The second imaging unit 372 captures an image of the silhouette of the second component 37 held by the nozzle 220 in the B row of the head 213 using the middle infrared second light component transmitted through the second transmission unit 362. .

  As described above, according to the component mounting apparatus 200 according to the second modification of the present embodiment, the reflective first polarizing filter 251 is disposed in front of the first reflecting portion 231 disposed behind the first component 33 in the A row. Is disposed, and the reflective second polarizing filter 252 is disposed in front of the second reflecting portion 232 disposed behind the second part 37 in the B row. For example, the reflective first polarizing filter 251 is attached to the front surface of the first reflective portion 231 behind the first part 33 in the A row, and the reflective second polarizing filter 252 is the second part 37 in the B row. It is affixed on the front surface of the rear second reflecting portion 232. Therefore, the middle infrared first light is reflected by the first reflecting portion 231 behind the first part 33 in the A row, and the middle infrared first light is reflected by the reflective first polarizing filter 251. The light component is selectively transmitted, and the middle-stage infrared second light is reflected by the second reflecting portion 232 behind the second part 37 in the B row, and is reflected by the reflected second polarizing filter 252. The middle infrared second light component is selectively transmitted. That is, the middle-stage infrared first light component reflected by the first reflecting portion 231 in the A row floats as a silhouette of the first component 33 in the A row and is reflected by the second reflecting portion 232 in the B row. The middle infrared second light component makes the shape of the second part 37 in the B row rise as a silhouette. In the first transmission unit 361, the middle infrared first light component is transmitted and the middle infrared second light component is not transmitted. Therefore, the first imaging unit 371 images the first part 33 in the A row. The middle infrared first light component will reach. As a result, when images of components under different illumination conditions are simultaneously imaged, stray light from illumination light applied to other components can be suppressed, and the components can be simultaneously imaged with high accuracy.

(Modification 3)
FIG. 16 is a diagram illustrating a configuration of a component recognition camera according to the third modification of the present embodiment.

  In the embodiment and the modifications described so far, the first light emitting unit and the second light emitting unit and the second light emitting unit are suppressed in order to suppress (relieve) the luminance unevenness of the illumination irradiated to the first part in the A row and the second part in the B row. The light emitting portions were alternately arranged. However, in the third modification, as shown in FIG. 16, the light emitting unit of the component recognition camera includes a first light emitting unit for imaging the first component 31 arranged below the first component 31 in the A row, and The first polarizing filter disposed in front of the first light emitting unit and selectively transmits the light component having the polarization angle in the vertical direction, and the second component 32 disposed below the second component 32 in the B row are imaged. And the second light-emitting part and the second polarizing filter disposed in front of the second light-emitting part and selectively transmitting the light component having the polarization angle in the horizontal direction, the two of the A-line and the B-line are divided into two. It is divided into a light emitting part and a polarizing filter.

  Specifically, the upper stage illumination 310a that is the upper stage illumination includes an upper stage first light emitting unit 311a disposed below the first part 31 in the A row and an upper stage disposed below the second part 32 in the B row. A second light emitting unit 312a. An upper first polarizing filter 313a is disposed in front of the upper first light emitting unit 311a, and an upper second polarizing filter 314a is disposed in front of the upper second light emitting unit 312a.

  The middle stage front / rear illumination 320b, which is the middle stage front / rear illumination, includes a middle stage infrared first light emitting unit 321a and a middle stage red first light emitting part 323a disposed below the first part 31 in the A row, and a second row in the B row. A middle infrared second light emitting unit 322a and a middle red second light emitting unit 324a arranged below the component 32 are provided. A middle infrared first polarizing filter 325a is disposed in front of the middle-stage infrared first light emitting unit 321a of row A, and the middle-stage red first light emitting unit 321a is disposed in the vertical direction of the middle-stage infrared first light emitting unit 321a of row A. A middle-stage infrared first polarizing filter 327a is disposed in front of the one light emitting section 323a, and a middle-stage red second polarizing filter 326a is disposed in front of the middle-stage infrared second light-emitting section 322a of the B row. A middle red second polarizing filter 328a is arranged in front of the middle red second light emitting unit 324a arranged in the vertical direction of the infrared second light emitting unit 322a.

  Further, a middle stage left and right illumination 330a (not shown), which is a middle stage left and right illumination respectively disposed on both sides in the Y axis direction orthogonal to the column direction (X axis direction) of the nozzles 220 of the head 213, is in the vertical direction (Z In the axial direction, a middle left and right first light emitting portion 331a and a middle left and right second light emitting portion 332a are provided. A middle-stage left / right first polarizing filter 333a is disposed in front of the middle-stage left / right first light emitting section 331a, and a middle-stage left / right second polarizing filter 334a is disposed in front of the middle-stage left / right second light-emitting section 332a.

  The lower illumination 340a, which is the lower illumination, is a lower first light emitting portion 341a arranged below the first part 31 in the A row and a lower second light emission arranged below the second part 32 in the B row. Part 342a. A lower first polarizing filter 343a is disposed in front of the lower first light emitting unit 341a, and a lower second polarizing filter 344a is disposed in front of the lower second light emitting unit 342a.

  As described above, the first light emitting unit for imaging the first component 31 disposed below the first component 31 in the A row and the second component disposed below the second component 32 in the B row. When the influence of the luminance unevenness of illumination is small in the imaging of the components by dividing into two area groups as two light emitting parts of the second light emitting part for imaging 32, as in Modification 3 A simple lighting arrangement can be obtained. In addition, by the same imaging method as the above-mentioned embodiment, stray light can be suppressed, and the first part 31 in the A row and the second part 32 in the B row can be taken with high accuracy at the same time. Thus, the productivity of the mounting board can be improved.

  The component mounting apparatus according to the embodiment of the present invention and its modification has been described above, but the present invention is not limited to this embodiment and its modification.

  It should be thought that embodiment disclosed this time and its modification are illustrations in all points, and are not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in the above embodiment and its modification, the component recognition camera includes a polarizing filter that selectively transmits a light component in the vertical direction in front of the first light emitting unit and the first transmitting unit, and the second light emitting unit. In addition, a polarizing filter that selectively transmits the light component in the lateral direction is provided in front of the second transmission part. However, the component recognition camera does not include the filter in front of the first light emitting unit and the second light emitting unit, emits red light, for example, from the first light emitting unit, and red light in front of the first transmission unit. A film that selectively transmits the component may be disposed, for example, blue light may be emitted from the second light emitting unit, and a film that selectively transmits the blue light component may be disposed in front of the second transmitting unit. . That is, the first light component is all the components of the first light, and the second light component is all the components of the second light. Similarly, the component recognition camera does not include the filter in front of the first light emitting unit and the second light emitting unit, emits infrared light or ultraviolet light from the first light emitting unit, and forwards the first transmitting unit. A film that selectively transmits infrared light or ultraviolet light components, emits visible light such as red light from the second light emitting portion, and visible light components such as red light in front of the second transmitting portion. You may decide to arrange | position the film which selectively permeate | transmits.

  Further, in the above-described embodiment and its modification, the component recognition camera includes the imaging unit 370 that is one CCD camera, and the first imaging unit 371 and the second imaging unit 372 capture an image of the component. . However, the component recognition camera may include two CCD cameras, and each CCD camera may have the functions of the first imaging unit 371 and the second imaging unit 372.

  Moreover, in the said embodiment and its modification, suppose that the front surface of each light emission part with which a component recognition camera is provided is planar shape. However, the front surface of each light emitting unit may have a spherical shape so that the component can be easily irradiated with light.

  Further, in the above-described embodiment and its modifications, the imaging method in which the component recognition camera of the component mounting apparatus images a plurality of components held by the head 213 has been described. However, the imaging method is not limited to the component imaging method in the component mounting apparatus, and may be an imaging method for imaging a plurality of objects.

  INDUSTRIAL APPLICABILITY The present invention can be used in a component mounting apparatus that can shorten the component recognition processing time by simultaneously imaging a plurality of components with high accuracy to improve the productivity of the mounting board.

DESCRIPTION OF SYMBOLS 10 Component mounting system 20 Board | substrate 30, 36 Components 31, 33, 34 First component 32, 35, 37 Second component 100 Control device 200 Component mounting device 210 Mounting unit 211 Component supply part 212 Component cassette 213 Head 214 Component recognition camera 220 Nozzle 230 Reflecting part 231 First reflecting part 232 Second reflecting part 240 Film 251 Reflecting first polarizing filter 252 Reflecting second polarizing filter 310, 310a Upper stage illumination 311, 311a Upper stage first light emitting part 312, 312a Upper stage second light emitting part 313 313a Upper first polarizing filter 314, 314a Upper second polarizing filter 320, 320a, 320b Middle front and rear illumination 321, 321a Middle infrared first light emitting unit 322, 322a Middle infrared second light emitting unit 323, 323a Middle red first Light emitting unit 32 324a Middle red second light emitting unit 325, 325a Middle infrared first polarizing filter 326, 326a Middle infrared second polarizing filter 327, 327a Middle red first polarizing filter 328, 328a Middle red second polarizing filter 330, 330a Middle stage Left and right illuminations 331, 331a Middle left and right first light emitting units 332, 332a Middle left and right second light emitting units 333, 333a Middle left and right first polarizing filters 334, 334a Middle left and right second polarizing filters 340, 340a Lower illuminations 341, 341a Lower first light emission Section 342, 342a Lower second light emitting section 343, 343a Lower first polarizing filter 344, 344a Lower second polarizing filter 350 Imaging optical section 360, 360a Transmission filter 361 First transmission section 361a Rectangular first transmission section 361b Triangle first Transmission part 362 Second transmission Part 362a rectangular second transmitting portion 362b triangular second transmitting portion 363 third transmitting portion 370 imaging unit 371 first imaging section 372 Second imaging section 380 the air cylinder

Claims (5)

A component mounting device that includes an imaging device, recognizes the first component and the second component held by the head by imaging with the imaging device, and mounts the component on a substrate,
The imaging device
A first light emitting unit for emitting first light;
A second light emitting unit for emitting second light;
A first imaging unit that images the first component held by the head using the first light emitted from the first light emitting unit;
Using the second light emitted from the second light emitting unit, a second imaging unit that images the second component held by the head;
The first light component, which is a part or all of the first light, is disposed in a path toward the first imaging unit, and is a component that is different from the first light component and is one of the second light. A second light component that is a part or all of the components is disposed in a path toward the first imaging unit, and a first transmission unit that selectively transmits the first light component;
The second light component is disposed in a path toward the second imaging unit, and the first light component is disposed in a path toward the second imaging unit, and selectively transmits the second light component. With two transmission parts,
At least one of the transmission region through which the first transmission part transmits the first light component and the transmission region through which the second transmission unit transmits the second light component is configured to be changeable in size. apparatus. The imaging device further includes:
A first polarizing filter that selectively transmits the first light component that is a light component of a first polarization angle among the first light emitted by the first light emitting unit;
A second polarizing filter that selectively transmits the second light component, which is a light component having a second polarization angle different from the first polarization angle, of the second light emitted from the second light emitting unit. Item 2. The component mounting apparatus according to Item 1. further,
A first reflecting part disposed behind the first part and reflecting the first light emitted by the first light emitting part;
A second reflecting part disposed behind the second part and reflecting the second light emitted by the second light emitting part;
The first polarizing filter is disposed in front of the first reflecting portion,
The component mounting apparatus according to claim 2, wherein the second polarizing filter is disposed in front of the second reflecting portion. An imaging apparatus is an imaging method for imaging a first object and a second object,
A first light emitting step in which a first imaging unit included in the imaging device emits first light used to image the first object;
A second light emitting step in which a second imaging unit included in the imaging device emits second light used for imaging the second object;
A change step of changing a size of a transmission region that transmits the first light component, formed in a transmission part that selectively transmits the first light component that is a part or all of the first light component;
The first light component is disposed in a path toward the first imaging unit, and a second light component that is a component different from the first light component and is a part or all of the second light is included. A transmission step of selectively transmitting the first light component among the light components directed to the first imaging unit, wherein the transmission unit arranged in a path toward the first imaging unit;
An imaging step including imaging the first object using the first light component transmitted in the transmission step. The first object is a first component held by a head included in a component mounting apparatus that mounts a component on a substrate,
The second object is a second part held by the head,
In the first light emitting step, the first imaging unit included in the imaging device included in the component mounting apparatus emits the first light used for imaging the first component;
In the second light emitting step, the second imaging unit emits second light used for imaging the second component,
The imaging method according to claim 4, wherein in the imaging step, the first component held by the head is imaged using the first light component.

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