JP2021144979A - Lighting device and component mounting device - Google Patents

Abstract

To provide a lighting device that makes it difficult to cause a bright portion in an image captured from below.SOLUTION: A lighting device to be attached to a head is arranged on an opposite side to a side camera with respect to a nozzle on the side camera side, and includes an emission unit which emits light to the side camera and is arranged outside the nozzle, a bottom surface portion 39 which is provided continuously with a lower end of the emission unit, and a top surface portion 40 which is provided continuously with an upper end of the emission portion. At least lower surfaces of the bottom surface portion and the top surface portion serve as antireflection surfaces 39S and 40S, and a portion of the emission unit which excludes the upper end and the lower end thereof serves as a middle portion. Edge portions 38TE and 38ME on the side camera side at the upper end and the middle portion of the emission unit are more remotely apart from the side camera than the edge portion 39E on the side camera side of the bottom surface. The edge portion 38BE on the side camera side at the lower end of the emission portion is away from the side camera at the same distance as or more remotely than the edge portion 39E on the side camera side on the bottom surface.SELECTED DRAWING: Figure 10

Description

This specification discloses techniques relating to lighting devices and component mounting devices.

Conventionally, in a component mounting device for mounting an electronic component on a substrate, imaging is performed in each process in order to improve the mounting accuracy of the electronic component. For example, Japanese Patent No. 6486501 (Patent Document 1 below) has a tubular shape with a first imaging unit that images the rotary head from below and a second imaging unit that images parts adsorbed on the nozzle from the side. Disclosed is a component mounting device including a diffuser member that diffuses light emitted from a light source unit and emits light emitted from a side surface for imaging by a second imaging unit.

Japanese Patent No. 6486501

The above-mentioned problems of the component mounting device will be described with reference to the drawings. As shown in FIG. 1, when the first imaging unit C performs imaging by reflected light from below, the diffusion member D may be reflected in the image captured by the first imaging unit C, which may hinder component recognition. In order to prevent this, it is conceivable to apply an antireflection paint on the lower surface of the diffusion member D and provide an antireflection surface DS. However, even if such an antireflection surface DS is provided, when the diffusion member D is tilted and attached to the head H, as shown in FIG. 2, the diffusion member D is included in the image captured by the first imaging unit C. The side surface may be reflected as a bright part BS. In particular, when mounting a large component P, there is a problem that the bright portion BS overlaps with the bright portion such as the electrode of the component P, making it difficult to recognize the component.

The technique described in the present specification has been completed based on the above circumstances, and an object of the present invention is to provide an illuminating device that does not easily generate a bright part in an image captured from below.

The illuminating device of the present disclosure includes a head in which a plurality of nozzles for sucking parts mounted on a substrate are arranged, a side camera for photographing the parts sucked on the nozzles from the side, and the nozzles. In a component mounting device including a lower camera for capturing an image of the attracted component from below, a lighting device attached to the head, the side camera with respect to the nozzle on the side camera side. An emitting portion that is arranged on the opposite side of the And a top surface portion continuously provided at the upper end of the exit portion, the bottom surface portion and at least the lower surface of the top surface portion are antireflection surfaces, and the upper end portion and the lower end portion of the exit portion. The portion excluding the above is an intermediate portion, and the upper end portion of the exit portion and the edge portion of the intermediate portion on the side camera side are from the side camera from the edge portion of the bottom surface portion on the side camera side. The edge portion of the exit portion on the side camera side at the lower end coincides with the edge portion of the bottom surface portion on the side camera side, or the edge portion of the bottom surface portion on the side camera side. A lighting device that is farther away from the side camera.

According to the present disclosure, it is possible to provide an illuminating device that does not easily generate a bright portion in an image captured from below.

Side view showing a state in which the lighting device is tilted with respect to the head in the conventional component mounting device. The figure which shows the image which image | imaged the head in the state of FIG. 1 from below. Top view showing the overall configuration of the component mounting apparatus according to the first embodiment. Cross-sectional view of the head according to the first embodiment Cross-sectional view of the head body and the side camera according to the first embodiment. Cross-sectional view of the rotary unit according to the first embodiment A block diagram showing an electrical configuration of the component mounting device according to the first embodiment. Perspective view of the lighting device according to the first embodiment Side view of the lighting device according to the first embodiment Bottom view of the head to which the lighting device according to the first embodiment is attached. The figure which shows the surface of the lighting substrate which concerns on Embodiment 1. The figure which shows the back surface of the lighting board which concerns on Embodiment 1. Side view of the head to which the lighting device according to the first embodiment is attached. Side view of the lighting device according to the second embodiment Bottom view of the head to which the lighting device according to the second embodiment is attached. Side view of the lighting device according to the third embodiment

[Explanation of Embodiments of the present disclosure]
First, the embodiments of the present disclosure will be listed and described.
(1) The illuminating device of the present disclosure includes a head in which a plurality of nozzles for sucking parts mounted on a substrate are arranged, a side camera for photographing the parts sucked on the nozzles from the side, and a side camera. A lighting device attached to the head in a component mounting device including a lower camera for capturing an image of the component attracted to the nozzle from below, with respect to the nozzle on the side camera side. It is arranged on the opposite side of the side camera, and is provided continuously at the lower end of the exit portion and the exit portion that emits light toward the side camera outside the nozzle for imaging by the side camera. A bottom surface portion and a top surface portion continuously provided at the upper end of the exit portion are provided, and at least the bottom surface portion and at least the lower surface of the top surface portion are antireflection surfaces, and the upper end portion of the exit portion is provided. The portion excluding the lower end is an intermediate portion, and the upper end of the exit portion and the edge portion of the intermediate portion on the side camera side are on the side of the edge portion of the bottom surface portion on the side camera side. The edge of the exit portion on the side camera side at the lower end of the exit portion coincides with the edge portion of the bottom surface portion on the side camera side, or the edge portion of the bottom surface portion on the side camera side. It is a lighting device that is separated from the side camera from the edge of the.

According to the above configuration, even when the lighting device is attached at an angle with respect to the head, the emitting portion is blocked by the bottom surface portion and is less likely to be reflected in the image captured by the lower camera, and a bright portion is less likely to be generated. This facilitates component recognition by the lower camera.

(2) The head has a rotary unit that rotates around the axis of the head, a plurality of the nozzles are arranged in a circle on the rotary unit, and the side camera has a rotary unit with respect to the axis of the head. It may be arranged outside the rotary unit, and the exit portion may be arranged so as to be surrounded by a plurality of the nozzles.

According to the above configuration, in the component mounting device including the head having the rotary unit, the component recognition by the lower camera becomes easy.

(3) The emitting portion may have a cylindrical shape centered on the axis of the head, and the bottom surface portion may project outward from the side surface of the emitting portion with respect to the axis of the head.

The above configuration can be configured by attaching the bottom surface portion to the lower end of the exit portion, for example, when the bottom surface portion is configured separately from the exit portion.

(4) The emitting portion may have the shape of a truncated cone centered on the axis of the head, and may project outward with respect to the axis of the head from the upper end to the lower end.

According to the above configuration, since the emitting portion has a truncated cone shape, it is not necessary to provide the bottom surface portion separately, and the emitting portion can be integrally formed with the emitting portion.

(5) The top surface portion may be connected to the exit portion via an extension portion in the shape of a cylinder centered on the axis of the head.

The exit portion is optimally formed by painting the entire outer surface of the lighting device with an antireflection paint, and then peeling off the other paint while leaving the paint on the necessary part. According to the above configuration, since the extending portion is provided, it is possible to prevent the coating on the top surface portion from being peeled off when the coating on the emitting portion is peeled off. Therefore, it becomes easy to form the exit portion without removing the coating on the top surface portion.

(6) The component mounting device of the present disclosure is a component mounting device including any one of the above lighting devices.

According to the above configuration, it is possible to provide a component mounting device in which component recognition by a lower camera is easy.

[Details of Embodiments of the present disclosure]
Hereinafter, embodiments of the present disclosure will be described. The present disclosure is not limited to these examples, but is shown by the scope of claims and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

<Embodiment 1>
Embodiment 1 of the present disclosure will be described with reference to FIGS. 3 to 12. In addition, about a plurality of the same members, only some members may be designated with reference numerals, and the reference numerals of other members may be omitted.

[Parts mounting device]
The component mounting device 10 is a device for mounting a component E such as an electronic component on a substrate B such as a printed circuit board. As shown in FIG. 3, the component mounting device 10 includes a base 11, a transport device 12, a component supply device 14, a head 17, a nozzle shaft 28A (only a part thereof is shown for convenience of illustration), a side camera 33, and a lower portion. It includes a camera 22, a control unit 110 (see FIG. 7), and the like.

[Base]
As shown in FIG. 3, the base 11 has a rectangular parallelepiped shape that is horizontally long in the left-right direction shown in the drawing. On the base 11, a transport device 12, a head transport unit 16, a lower camera 22, and the like extending in the left-right direction (X-axis direction) shown in the drawing are arranged. The position surrounded by the alternate long and short dash line in FIG. 3 indicates the working position when the component E is mounted on the substrate B.

[Transport device]
The conveyor 12 has a pair of conveyor belts 13. The transport device 12 transports the substrate B along the transport direction (X-axis direction, left-right direction shown in FIG. 3). The substrate B is carried from one side in the transport direction (on the right side in the drawing of FIG. 3) to the work position on the base 11 along the conveyor belt 13, stops at the work position, and after the component E is mounted, the conveyor belt 13 It is carried out to the other side (left side in the drawing of FIG. 3) along the above.

[Parts supply device]
As shown in FIG. 3, component supply devices 14 are provided at both ends of the base 11 in the vertical direction (Y-axis direction) shown in the drawing. A plurality of feeders 15 are arranged in the component supply device 14. The feeder 15 holds a reel wound with tape that holds a plurality of parts E at predetermined intervals. The feeder 15 is configured to supply the parts E one by one by rotating the reel and feeding out the tape.

[Head transport section]
The head transport unit 16 transports the head 17 in the X-axis direction and the Y-axis direction within a predetermined movable range. As shown in FIG. 3, the head transport unit 16 includes an X-axis beam 18, a Y-axis frame 19, an X-axis servomotor 20, a Y-axis servomotor 21, and the like. The head 17 is supported by the X-axis beam 18 and can be reciprocated in the X-axis direction by the X-axis servomotor 20. The X-axis beam 18 is supported by the Y-axis frame 19 and can be reciprocated in the Y-axis direction by the Y-axis servomotor 21.

[Down camera]
In the vicinity of the working position on the base 11, as shown in FIG. 3, an image of the component E sucked from the component supply device 14 by the head 17 is imaged from below (direction from the back to the front of the paper in FIG. 3). The lower camera 22 is fixed. When the image is taken by the lower camera 22, the optical axis of the lower camera 22 is parallel to the axis of the head (center of rotation), and the image of the lower camera 22 faces the lower surface of the head 17.

[head]
As shown in FIG. 4, the head 17 includes a head main body 23, a rotary unit 27, and a side camera 33.

[Head body]
As shown in FIG. 5, the head main body 23 is provided with a shaft 24 at the center. The shaft 24 is configured to be rotatable around the axis of the head 17 by the head motor 25. The electrical wiring L is housed inside the shaft 24. The terminal of the electrical wiring L is connected to the receiving substrate 26 at the lower end of the shaft 24. The other terminal of the electrical wiring L is connected to an external power source (not shown).

[Rotary unit]
As shown in FIG. 6, a plurality of nozzle shafts 28A (18 nozzles in the present embodiment) are arranged in a circle on the rotary unit 27. A nozzle 28B is detachably attached to the lower end of the nozzle shaft 28A. Negative pressure is supplied to the nozzle 28B from the air supply device 51 (not shown) via the nozzle shaft 28A. The nozzle 28B can suck and hold the component E by the negative pressure, and can release the holding of the component E by releasing the negative pressure. Each nozzle shaft 28A is configured to be able to move up and down for each nozzle shaft 28A by a Z-axis servomotor 29 (see FIG. 7). Further, each nozzle shaft 28A is configured to be rotatable around the central axis for each nozzle shaft 28A by the R-axis servomotor 30 (see FIG. 7).

As shown in FIGS. 4 and 6, the rotary unit 27 is attached to the lower part of the shaft 24 by a bolt B1 and can rotate around the axis of the head 17 together with the shaft 24. As shown in FIG. 6, a projecting portion 31 projecting in a columnar shape about the axis of the head 17 is provided at the lower portion of the rotary unit 27. A mark 32 indicating the axis of the head 17 is provided at the lower end of the protruding portion 31, and is used for position calibration.

[Side camera]
As shown in FIGS. 4 and 5, the side camera 33 is provided on the lower side surface of the head main body 23, and is arranged outside the nozzle 28B of the rotary unit 27 with respect to the axis of the head 17. The side camera 33 photographs the component E held by the nozzle 28B from the side.

[Electrical configuration of component mounting device]
As shown in FIG. 7, the component mounting device 10 is controlled and controlled as a whole by the control unit 110, and the control unit 110 includes an arithmetic processing unit 111 configured by a CPU (Central Processing Unit) or the like. The motor control unit 112, the storage unit 113, the image processing unit 114, the external input / output unit 115, the component supply device communication unit 116, the management device communication unit 117, the operation unit 118, and the like are connected to the arithmetic processing unit 111.

The motor control unit 112 receives a command from the arithmetic processing unit 111, and based on the mounted program stored in the storage unit 113, the head motor 25, the Y-axis servomotor 21, the X-axis servomotor 20, the Z-axis servomotor 29, It controls the R-axis servomotor 30, the transport device 12, and the like, and mounts the component E.

The storage unit 113 stores various mounting programs such as a continuous mounting sequence for continuously mounting the component E on the substrate B, various data, and the like. The various data include substrate information regarding the number of substrates B to be produced and the type of substrate B, identification information of the nozzle 28B mounted on the head 17, and the like.

The image processing unit 114 is adapted to capture image signals output from the side camera 33 and the lower camera 22, and generates an image based on the captured image signals.

The external input / output unit 115 is a so-called interface, and the arithmetic processing unit 111 takes in a detection signal from a sensor 50 (such as a pressure sensor that measures negative pressure) through the external input / output unit 115, and connects with the air supply device 51. Transfers control signals. The sensor 50 may be connected to the external input / output unit 115 by wire or wirelessly.

The component supply device communication unit 116 is connected to the component supply device 14, and controls the component supply device 14 in an integrated manner.

The operation unit 118 includes a display device (not shown) such as a liquid crystal monitor, an input device (not shown) such as a keyboard and a mouse, and receives input from an operator and outputs the input to the operator.

The management device communication unit 117 is communicably connected to, for example, a management device 60 such as a personal computer. For example, the management device 60 determines in advance the mounting order of the components E on the board B to be produced by an optimization program.

[Lighting device]
As shown in FIG. 8, the lighting device 34 includes a lighting substrate 35, an exit portion 38, a bottom surface portion 39, and a top surface portion 40. As shown in FIG. 4, the lighting device 34 is attached to the head 17.

[Emission part, top surface part, bottom surface part]
As shown in FIGS. 8 and 9, the emitting unit 38 is made of an acrylic resin capable of diffusing the light emitted by the LED (light emitting diode) 36 described later while guiding the light, and has a cylindrical shape. A diffusing agent is mixed inside the resin to diffusely reflect the light transmitted inside to give an overall milky white color, but a transparent resin may be used to perform a satin finish that diffuses the light only on the surface. The portion of the exit portion 38 excluding the upper end 38T and the lower end 38B is the intermediate portion 38M. The bottom surface portion 39 is provided separately from the exit portion 38, and is attached so as to be continuous with the lower end portion 38B of the exit portion 38. The bottom surface portion 39 has the shape of a disk having the same center as the exit portion 38, and protrudes outward from the side surface of the exit portion 38. The top surface portion 40 is continuously and integrally formed with the upper end 38T of the exit portion 38. The top surface portion 40 has a cylindrical shape having the same center as the exit portion 38, and protrudes outward from the side surface of the exit portion 38. That is, considering that the side camera 33 is on the right side of the drawing in FIG. 10, the edge portion (that is, 38TE, 38ME, 38BE) of the exit portion 38 (that is, the upper end 38T, the middle portion 38M, and the lower end 38B) on the side camera 33 side. ) Is separated from the side camera 33 by the edges 39E and 40E on the side camera 33 side of the bottom surface portion 39 and the top surface portion 40. In the present embodiment, since the head 17 rotates, as a result, the edge portion of the exit portion 38 on the side camera 33 side becomes the entire side surface of the exit portion 38, but the head does not rotate and is lateral. When only one camera is provided, the side edge of the exit portion on the side of the camera is one side surface. The lower surface and the side surface of the bottom surface portion 39 and the top surface portion 40 are painted with antireflection paint to form antireflection surfaces 39S and 40S. The emitting portion 38 is formed by painting the entire outer surface of the lighting device 34 (excluding the bottom surface portion 39 provided separately) with the antireflection paint, and then peeling off the coating, leaving the antireflection surface 40S of the top surface portion 40. Optimal formation. Antireflection paints are often black. Further, in order to emit sufficient light from the emitting unit 38, a paint that reflects light well, for example, a white paint may be applied under the antireflection paint. When the white paint is applied first, it is necessary to remove the white paint in order to expose the exit portion 38.

[Lighting board, spring pin connector]
The lighting substrate 35 has a plate shape, and as shown in FIG. 11, six LEDs 36 are arranged in a circle on the surface. As shown in FIG. 12, two 2-pole spring pin connectors 37 for supplying electric power to the LED 36 are arranged on the back surface of the lighting substrate 35. By adopting the spring pin connector 37 for the connector of the LED 36, the wiring space of the LED 36 in the lighting device 34 can be reduced. The electric power required for lighting the LED 36 can be supplied by one spring pin connector 37, but the other spring pin connector 37 is provided as a spare. As a result, when a problem such as poor contact occurs with one spring pin connector 37 used, another spring pin connector 37 can be used. As shown in FIG. 8, the lighting substrate 35 is housed inside the top surface portion 40 so that the surface on which the LED 36 is arranged faces downward.

As shown in FIGS. 8 and 9, a through hole 41 is provided at the center of the lighting device 34. As shown in FIG. 4, the through hole 41 is adapted to receive the protrusion 31. The lighting device 34 is attached to the rotary unit 27 by a bolt B2, and can rotate around the axis of the head 17 together with the shaft 24 and the rotary unit 27. The lower surface of the bolt B2 is painted black to prevent reflection. When the lighting device 34 is attached to the rotary unit 27, the spring pin connector 37 is connected to the receiving substrate 26 of the shaft 24. As described above, by adopting the spring pin connector 37 as the connector of the LED 36, the workability of attaching / detaching the lighting device 34 to / from the head 17 is improved.

[Image taken with a side camera]
In order to image the component E with the side camera 33 using the lighting device 34, it is necessary to adjust the length of the nozzle 28B, the rising height, the illumination range of the emitting unit 38, and the like according to the size of the component E. be. As shown in FIG. 13, when the component E fits between the lighting device 34 and the side camera 33 and has a size that can be imaged by the side camera 33, the nozzle 28B is lowered by the Z-axis servomotor 29. Then, after taking out the component E from the feeder 15, it rises to the rising end. The height of the rising end of each nozzle shaft 28A attached to the head 17 is the same. That is, if the lengths of the nozzles 28B are the same, the height of the lower end of the nozzles 28B at the rising end is the same for each nozzle 28B. At this rising end, the component E is imaged by the side camera 33 against the background of the illumination light from the exit portion 38. At this time, a range in the height direction of the emitting portion 38 is secured so that the upper end (that is, the lower end of the nozzle 28B) to the lower end of the component E is projected on the captured image with the emitting portion 38 as the background. For this purpose, when the optical axis of the side camera 33 is substantially horizontal and the image spreads in the vertical direction, as shown by the alternate long and short dash line in FIG. 13, the height of the lower end of the nozzle 28B at the rising end of the component E The exit portion 38 may be secured up to a height lower than the thickness.

Further, if the component E is large and interferes with the lighting device 34 or the side camera 33 when ascending after being taken out from the feeder 15, the ascending is stopped at a height that does not interfere as shown in FIG. To. For this purpose, the ascending stroke of the Z-axis servomotor 29 may be made smaller than that of small parts to stop, or the nozzle 28B itself may be lengthened so as not to interfere with the ascending end of the nozzle 28B. .. It should be noted that the illumination range of the exit portion 38 is secured widely with a margin so that the background of the component is reflected brightly even if the illumination device 34 is mounted at an inclination to some extent. Further, although the thickness (that is, the length in the vertical direction) varies depending on the type of parts, it is sufficient that the range in the vertical direction is secured so as to correspond to the majority of normally used parts.

In the positional relationship between the suitable lighting device 34 and the component E as described above, the light of the LED 36 is emitted from the emitting unit 38 toward the component E adsorbed on the nozzle 28B, and the light transmitted around the component E is on the side. The image is taken by the square camera 33. Therefore, in the image captured by the side camera 33, the component E attracted to the nozzle 28B is reflected as a dark portion, and the thickness of the component E, the suction posture, and the like can be recognized.

[Image taken by lower camera]
The lighting device 34 is turned on when the side camera 33 captures the side image of the component E, but is turned off when the lower camera 22 captures the side image. When the lower camera 22 captures the image of the component E, the component E is irradiated with light from the illumination separately arranged below, and the reflected light is imaged. The antireflection surfaces 39S and 40S of the bottom surface portion 39 and the top surface portion 40 absorb light from below and appear as dark portions in the image captured by the lower camera 22 (see FIG. 10). Here, when the light from the illumination for imaging of the lower camera 22 is irradiated to the exit portion 38, it is diffused inside, that is, diffusely reflected, but the light due to this diffuse reflection is blocked by the antireflection surfaces 39S and 40S. It will not leak downwards. Further, even if the lighting device 34 is lit, the light does not leak downward as well. On the other hand, in the image captured by the lower camera 22, a metal portion such as an electrode of the component E appears as a bright portion. Therefore, the lower camera 22 can recognize the position of the component E, the suction posture, and the like.

Here, when the lighting device 34 is attached at an angle with respect to the head 17, it is conceivable that the emitting portion 38 produces a bright portion when it is reflected in the image captured by the lower camera 22 (see FIG. 2). However, in the present embodiment, as shown in FIG. 10, the edge portions 38TE, 38ME, 38BE on the side camera 33 side at the upper end 38T, the middle portion 38M, and the lower end 38B of the exit portion 38 are the bottom surface portion 39 and the top surface portion. It is separated from the side camera 33 by the edges 39E and 40E on the side camera 33 side of the 40. Therefore, even when the lighting device 34 is attached at an angle with respect to the head 17, the exiting portion 38 is blocked by the bottom surface portion 39, is less likely to be reflected in the image captured by the lower camera 22, and is less likely to generate a bright portion. Therefore, according to this configuration, it is not necessary to precisely adjust the mounting angle of the head 17 of the lighting device 34 with respect to the axis for imaging by the lower camera 22, and the mounting work of the lighting device 34 is made easier and lower. The camera 22 can recognize the component E. The imaging of the component E by the side camera 33 and the lower camera 22 is the same in the second and third embodiments described later.

<Embodiment 2>
Next, the second embodiment will be described with reference to FIGS. 14 and 15. The component mounting device 210 of the second embodiment includes a lighting device 234, and is the same as the component mounting device 10 of the first embodiment in other configurations. For the same configuration as the component mounting device 10 of the first embodiment, the same reference numerals as those of the first embodiment are used, and detailed description thereof will be omitted.

The lighting device 234 includes a lighting substrate 35, an exit portion 238, a bottom surface portion 239, and a top surface portion 240.

As shown in FIG. 14, the emitting portion 238 has a shape of a truncated cone centered on the axis of the head 17, and projects outward with respect to the axis of the head 17 from the upper end 238T toward the lower end 238B. The lower surface of the bottom surface portion 239 and the lower surface and side surfaces of the top surface portion 240 are painted with antireflection paint to form antireflection surfaces 239S and 240S. Since the bottom surface portion 239 is the bottom surface of the truncated cone and the exit portion 238 which is the side surface of the truncated cone is above the bottom surface portion 239, its outer edge is inside the bottom surface portion 239 with respect to the axis of the head 17. Assuming that the lower end 238B of the exiting portion 238 is at the same height as the bottom surface portion 239, at least at the lower end 238B of the emitting portion 238 with respect to the axis, the outer edge thereof coincides with the outer edge of the bottom surface portion 239. Further, the outer edge of the exit portion 238 on the upper side (that is, the upper end 238T and the intermediate portion 238M) in the axial direction of the head 17 is closer to the axis of the head 17 than the outer edge of the bottom surface portion 239. In other words, the outer edge of the bottom surface portion 239 is separated from the axis of the head 17 from the outer edge of the upper end portion 238T and the intermediate portion 238M of the exit portion 238.

In the above configuration, as in the first embodiment, the entire side surface of the exiting portion 238 is the edge of the side camera side 33 of the emitting portion 238, so that the upper end of the emitting portion 238 is as shown in FIG. The edge portions 238TE and 238ME on the side camera 33 side in the 238T and the intermediate portion 238M are separated from the side camera 33 by the edge portions 239E and 240E on the side camera 33 side of the bottom surface portion 239 and the top surface portion 240. Further, the edge portion 238BE on the side camera 33 side at the lower end 238B of the exit portion 238 coincides with the edge portion 239E on the side camera 33 side of the bottom surface portion 239, and the edge portion 240E on the side camera 33 side of the top surface portion 240. It is farther away from the side camera 33. Therefore, even when the lighting device 234 is attached at an angle with respect to the head 17, the emitting portion 238 is blocked by the bottom surface portion 239 and is less likely to be reflected in the image captured by the lower camera 22, and is less likely to generate a bright portion. This facilitates the recognition of the component E by the lower camera 22. Further, since the emitting portion 238 has a truncated cone shape, the bottom surface portion 239 does not have to be provided separately, and can be integrally formed with the emitting portion 238.

<Embodiment 3>
Next, the third embodiment will be described with reference to FIG. The component mounting device 310 of the third embodiment includes a lighting device 334, and is the same as the component mounting device 10 of the first embodiment in other configurations. For the same configuration as the component mounting device 10 of the first embodiment, the same reference numerals as those of the first embodiment are used, and detailed description thereof will be omitted.

The lighting device 334 includes a lighting substrate 35, an exit portion 338, a bottom surface portion 339, a top surface portion 340, and an extension portion 42.

The emitting portion 338 has a shape of a truncated cone centered on the axis of the head 17, and projects outward with respect to the axis of the head 17 from the upper end 338T toward the lower end 338B. The top surface portion 340 is connected to the exit portion 338 via an extension portion 42 having a cylindrical shape centered on the axis of the head 17. The lower surface of the bottom surface portion 339, the lower surface and side surfaces of the top surface portion 340, and the side surface of the extending portion 42 are painted with antireflection paint to form antireflection surfaces 339S, 340S, 42S.

According to the above configuration, even when the lighting device 334 is attached at an angle with respect to the head 17, the emitting portion 338 is blocked by the bottom portion 339 and is difficult to be reflected in the captured image of the lower camera 22, and a bright portion is generated. Difficult (the bottom view is the same as in FIG. 15). This facilitates the recognition of the component E by the lower camera 22.

The exit portion 338 is optimally formed by painting the entire outer surface of the lighting device 334 with the antireflection paint and then peeling off the paint. According to the above configuration, as shown in FIG. 16, by providing the extending portion 42, it is possible to secure the relief of the cutting tool for removing the coating, and the antireflection surface 340S of the top surface portion 340 is not peeled off. It becomes easy to form the exit portion 338. Since the antireflection surface 42S of the extension portion 42 is in a position where it is blocked by the bottom surface portion 339 even if a part of the reflection prevention surface 42S is peeled off when the exit portion 338 is formed, the peeled portion is reflected in the image captured by the lower camera 22. There is no such thing.

<Other Embodiments>
(1) In the first to third embodiments, the head 17 having the rotary unit 27 is provided, but an in-line type head in which the nozzle shafts are linearly arranged may be used.

(2) In the first to third embodiments, the LED 36 is used as the light source of the lighting device 34, but other light emitting methods may be applied. For example, it is also possible to use fluorescent light emission by coating the side surface of the emitting portion with a fluorescent paint and irradiating the emitting portion with ultraviolet rays from the outside.

10, 210, 310 ... Parts mounting device 11 ... Base 12 ... Conveyor device 13 ... Conveyor belt 14 ... Parts supply device 15 ... Feeder 16 ... Head transport section 17, H ... Head 18 ... X-axis beam 19 ... Y-axis frame 20 ... X-axis servo motor 21 ... Y-axis servo motor 22 ... Lower camera 23 ... Head body 24 ... Shaft 25 ... Head motor 26 ... Receiving board 27 ... Rotary unit 28A ... Nozzle shaft 28B ... Nozzle 29 ... Z-axis servo motor 30 ... R-axis servo motor 31 ... Projection 32 ... Mark 33 ... Side camera 34, 234, 334 ... Lighting device 35 ... Lighting board 36 ... LED
37 ... Spring pin connector 38, 238, 338 ... Exit part 38T, 238T, 338T ... Upper end 38B, 238B, 338B ... Lower end 38M, 238M, 338M ... Middle part 39, 239, 339 ... Bottom part 40, 240, 340 ... Heaven Faces 39S, 40S, 42S, 239S, 240S, 339S, 340S, DS ... Anti-reflection surfaces 38TE, 38BE, 38ME, 39E, 40E, 239TE, 238BE, 238ME, 239E, 240E ... Edge 41 ... Through hole 42 ... Extension Unit 50 ... Sensor 51 ... Air supply device 60 ... Management device 110 ... Control unit 111 ... Arithmetic processing unit 112 ... Motor control unit 113 ... Storage unit 114 ... Image processing unit 115 ... External input / output unit 116 ... Parts supply device Communication unit 117 ... Management device communication unit 118 ... Operation unit B ... Substrate B1, B2 ... Bolt BS ... Bright part C ... First imaging unit D ... Diffusion member E, P ... Parts L ... Electrical wiring

Claims (6)

A head in which multiple nozzles for adsorbing parts mounted on the board are arranged, and
A side camera for photographing the parts adsorbed on the nozzle from the side, and
In a component mounting device including a lower camera for capturing an image of the component adsorbed on the nozzle from below.
A lighting device attached to the head.
An emitting unit that is arranged on the opposite side of the side camera with respect to the nozzle on the side camera side and emits light toward the side camera outside the nozzle for imaging by the side camera. ,
A bottom surface portion continuously provided at the lower end of the exit portion and
A top surface portion continuously provided at the upper end of the exit portion is provided.
At least the lower surface of the bottom surface portion and the top surface portion is an antireflection surface.
A portion of the exit portion other than the upper end and the lower end is an intermediate portion.
The upper end portion of the exit portion and the edge portion of the intermediate portion on the side camera side are separated from the side camera by the edge portion of the bottom surface portion on the side camera side.
The edge portion of the exit portion on the side camera side at the lower end coincides with the edge portion of the bottom surface portion on the side camera side, or is lateral to the edge portion of the bottom surface portion on the side camera side. A lighting device away from the camera. The head has a rotary unit that rotates about the axis of the head.
The plurality of nozzles are arranged in a circle on the rotary unit.
The side camera is arranged outside the rotary unit with respect to the axis of the head.
The lighting device according to claim 1, wherein the emitting unit is arranged so as to be surrounded by a plurality of the nozzles. The exit portion has the shape of a cylinder centered on the axis of the head.
The lighting device according to claim 2, wherein the bottom surface portion projects outward from the side surface of the exit portion with respect to the axis of the head. The lighting device according to claim 2, wherein the emitting portion has a shape of a truncated cone centered on the axis of the head, and projects outward with respect to the axis of the head from the upper end to the lower end. The lighting device according to claim 4, wherein the top surface portion is connected to the exit portion via an extension portion in the shape of a cylinder centered on the axis of the head. A component mounting device including the lighting device according to any one of claims 1 to 5.

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