JP6274700B2 - Electronic component mounting equipment - Google Patents

Description

  The present invention relates to an electronic component mounting apparatus having a plurality of suction nozzles on the circumference of a rotary head rotatable around an axis, and more particularly, an electronic device capable of acquiring a two-dimensional image of an electronic component sucked by the suction nozzles. The present invention relates to a component mounting apparatus.

  In order to obtain a two-dimensional image of an electronic component sucked by a plurality of suction nozzles provided on the circumference of a rotary head that can rotate around an axis, an electronic component mounting described in Patent Document 1 has been conventionally performed. The device is known. In Patent Document 1, a phosphor having a phosphor screen that absorbs ultraviolet rays and emits visible light is disposed at the center of rotation of the rotary head, and ultraviolet rays are emitted toward the phosphors. A device and a component camera (imaging means) for acquiring a two-dimensional image of an electronic component sucked by the suction nozzle are arranged outside the suction nozzle.

JP 2007-287986 A

  In a conventional electronic component mounting apparatus as described in Patent Document 1, a phosphor having a phosphor screen is configured by a phosphor seal, and this phosphor seal is formed on a cylindrical portion provided at the rotation center of a rotary head. The current situation is that it is attached to the outer periphery. For this reason, conventionally, since there is a seam in the fluorescent seal affixed to the cylindrical part, the seam part is reflected in the background of the two-dimensional image of the electronic component, which has a problem of adversely affecting the image recognition of the electronic component.

  Also, the phosphor attached to the cylindrical part is usually placed at a position close to the suction nozzle, so that dust or the like is likely to adhere to it. Need to do. However, since there is a possibility that the fluorescent seal may be peeled off by cleaning, there is a problem that requires very delicate maintenance.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide an electronic component mounting apparatus having a configuration in which a seam does not exist in a phosphor.

In order to solve the above-described problems, a feature of the invention according to claim 1 is that a moving table that is movable in the XY plane with respect to a base, and a rotary head that is attached to the moving table and is rotatable about an axis. A mounting head provided with a plurality of suction nozzles on the circumference, background means for absorbing and emitting light energy, irradiation means for irradiating light toward the background means, and light emitted from the background means Is an electronic component mounting apparatus including a component camera that acquires a two-dimensional image of an electronic component sucked by the suction nozzle, the background means being a resin or glass A cylindrical or polygonal transparent ring that is detachably attached to a support body supported at the rotation center of the rotary head, and the background means is disposed on the inner peripheral surface of the transparent ring. Light from Receiving painted fluorescent paint for converting the light to expose the photosensitive portions of the component camera, the inner peripheral surface of the fluorescent paint painted on the inner peripheral surface of the transparent ring, painted white paint over the entire circumference An electronic component mounting apparatus capable of emitting light that can be a background of the two-dimensional image seamlessly.

In order to solve the above-mentioned problems, a feature of the invention according to claim 2 is that a movable table movable in the XY plane with respect to the base, and a rotary head attached to the movable table and rotatable about an axis. A mounting head provided with a plurality of suction nozzles on the circumference, background means for absorbing and emitting light energy, irradiation means for irradiating light toward the background means, and light emitted from the background means Is an electronic component mounting apparatus including a component camera that acquires a two-dimensional image of an electronic component sucked by the suction nozzle, the background means being a resin or glass A cylindrical or polygonal transparent ring that is detachably attached to a support that is supported at the center of rotation of the rotary head, and the background means is disposed on the inner peripheral surface of the transparent ring. from In response, a fluorescent paint for converting the photosensitive part of the component camera into light to be sensitized is applied, and light that can be the background of the two-dimensional image can be emitted seamlessly over the entire circumference. An electronic component mounting apparatus in which a mark is provided integrally and the transparent ring is held in an axial direction by a holding member that is detachably attached to the support by a biasing member .

  A feature of the invention according to claim 3 is the electronic component mounting apparatus according to claim 2, wherein a white paint is applied to the inner peripheral surface of the fluorescent paint applied to the inner peripheral surface of the transparent ring.

In order to solve the above-mentioned problems, a feature of the invention according to claim 4 is that a movable table movable in the XY plane with respect to the base, and a rotary head attached to the movable table and rotatable around an axis. A mounting head provided with a plurality of suction nozzles on the circumference, background means for absorbing and emitting light energy, irradiation means for irradiating light toward the background means, and light emitted from the background means Is an electronic component mounting apparatus including a component camera that acquires a two-dimensional image of an electronic component sucked by the suction nozzle, the background means being a resin or glass A cylindrical or polygonal transparent ring that is detachably attached to a support supported at the rotational center of the rotary head, and the background means is provided with light from the irradiation means. Received And a fluorescent paint that converts the photosensitive portion of the component camera into light to be sensitized, and can emit light that can be a background of the two-dimensional image seamlessly over the entire circumference. In the electronic component mounting apparatus, a reference mark is integrally provided, and the transparent ring is held in an axial direction by a holding member that is detachably attached to the support by a biasing member .

According to the first , second, and fourth aspects of the present invention, the background means is a resin or glass that is attached to the center of rotation of the rotary head, and receives light from the irradiating means to light the photosensitive part of the component camera. Since the material to be converted to is composed of a member coated or mixed, there is no seam by coating or mixing the material on the member, and the number of suction nozzles provided on the circumference of the rotary head increases. In addition, a two-dimensional image of the electronic component sucked by the suction nozzle can be obtained with high accuracy. In addition, since it is not necessary to arrange a light emitter such as an LED at the center of rotation of the rotating rotary head, wiring and the like to the rotating portion can be made unnecessary, and design and assembly can be facilitated.

According to the first to third aspects of the present invention, the background means includes a cylindrical or polygonal transparent ring that is detachably attached to a support body supported by the rotation center portion of the rotary head. Since the fluorescent paint is painted on the inner peripheral surface, there are no seams on the circumference, and the painted surface visible from the outer periphery of the transparent ring is a smooth surface with no unevenness due to the surface roughness of the transparent ring. Uniform visible light can be irradiated.

  In addition, dust and the like can be prevented from adhering to the fluorescent paint, and dust and the like are not attached to the fluorescent paint, so that cleaning work can be eliminated or reduced, and the fluorescent paint can be prevented from peeling off by cleaning. Therefore, a stable two-dimensional image can be acquired over a long period of time.

According to the first and third aspects of the invention, since the white paint is applied to the inner peripheral surface of the fluorescent paint applied to the inner peripheral surface of the transparent ring, the black holding member is provided inside the transparent ring. Even in such a case, the fluorescent paint visible from the outer periphery of the transparent ring can be brightened, and a highly accurate image with excellent contrast can be obtained.

  According to the invention of claim 4, the background means is mixed with a fluorescent paint in a cylindrical or polygonal transparent ring that is detachably attached to a support supported by the rotation center of the rotary head. Since it is manufactured, the fluorescent paint can be applied in the manufacturing process of the transparent ring, and the manufacturing can be facilitated as compared with the case where the fluorescent paint is applied to the transparent ring.

According to the second and fourth aspects of the invention, the plurality of reference marks are integrally provided on the support, and the transparent ring is held in the axial direction by the holding member that is detachably attached to the support by the biasing member. Even when the transparent ring is exchanged, the reference mark can be made immovable and work such as reference adjustment can be made unnecessary.

1 is a perspective view showing an entire electronic component mounting apparatus according to an embodiment of the present invention. It is a figure which shows the structure of the mounting head which concerns on embodiment. It is the figure seen from the arrow 3 direction of FIG. It is a figure which shows the specific structure of a background means. It is a figure which shows the state which applied the fluorescent paint and the white paint to the inner periphery of the transparent ring. It is a block diagram which shows the control apparatus which controls an electronic component mounting apparatus.

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the electronic component mounting apparatus 10 includes a component supply device 20, a board transfer device 30, and a component transfer device 40.

  As an example, the component supply device 20 is configured by arranging a plurality of tape feeders 21 on the base 11 in the X-axis direction. The tape feeder 21 has a supply reel 23 that is removably attached to a main body frame 22 that is detachably attached to the base 11, and is wound with a tape that accommodates a large number of electronic components in a row at intervals. Yes. Although not shown in the figure, a motor serving as a drive source for pitch-feeding the tape is incorporated inside the tape feeder 21, and the tape is fed out one pitch at a time by this motor, and the electronic components accommodated in the tape are transferred to each tape feeder. The components are sequentially supplied to a component supply position 21 a provided at the tip of the 21.

  The substrate transport device 30 transports the circuit boards B in the X-axis direction, and positions and holds them at a predetermined mounting position. As an example, the substrate transport lanes 31 and 32 are arranged in two rows in the Y direction orthogonal to the X-axis direction. It consists of a dual lane type. Each of the transport lanes 31 and 32 has a pair of guide rails 33A, 33B, 34A, and 34B arranged in parallel on the base 11 so as to face each other in parallel. A pair of conveyor belts (not shown) that support and transport the circuit board B guided by the guide rails 33A, 33B, 34A, and 34B are arranged in parallel in the transport lanes 31 and 32.

  The component transfer device 40 is composed of an XY robot. The XY robot is mounted on the base 11 and disposed above the component supply device 20 and the substrate transport device 30, and extends in the Y-axis direction along the guide rail 41. A movable Y-axis slide 42 is provided. The movement of the Y-axis slide 42 in the Y-axis direction is controlled by the servo motor 43 via a ball screw (not shown). An X-axis slide 44 is guided and supported on the Y-axis slide 42 so as to be movable along the guide rail 45 (see FIG. 2) in the X-axis direction. 2), and is controlled by the servo motor 47. The X-axis slide 44 constitutes a movable table that can move in the X-axis direction and the Y-axis direction.

  As shown in FIG. 2, a head main body 49 of a mounting head 48 for mounting the electronic component P on the circuit board B is detachably mounted on a movable table (X-axis slider) 44. Further, as shown in FIG. 1, a substrate camera 50 composed of a CCD camera that captures an unillustrated substrate mark formed on the circuit substrate B from above is fixed to the movable table 44.

  The mounting head 48 includes an R-axis motor 51, an index shaft 52, a rotary head 53, a nozzle holder 54, a suction nozzle 55, a θ-axis motor 56, a Z-axis motor 57, and the like. First and second frames 61 and 62 extending in the horizontal direction are integrally provided in the head body 49 so as to be separated from each other in the vertical direction, and the R-axis motor 51, θ-axis motor 56, and Z-axis motor are provided on the first frame 61. 57 is fixed.

  The output shaft of the R-axis motor 51 is connected to an index shaft 52 that is supported by the first frame 61 so as to be rotatable around the vertical axis AL (R-axis direction). On the index shaft 52, a rotating body 65 having a driven gear 63 and a θ-axis gear 64 is supported so as to be rotatable only. A rotary head 53 is fixed to the lower end portion of the index shaft 52.

  A plurality of (N) nozzle holders 54 are held on the rotary head 53 so as to be movable in the vertical direction (Z-axis direction) on a circumference concentric with the vertical axis AL. A suction nozzle 55 that holds the electronic component P is held at the lower end of each nozzle holder 54. A nozzle gear 67 that meshes with the θ-axis gear 64 is fixed to the upper end portion of the nozzle holder 54, and a compression spring 68 is provided between the nozzle gear 67 and the upper end of the rotary head 53. The nozzle holder 54 and the suction nozzle 55 are urged upward by the compression spring 68, and normally the N nozzle holders 54 and the suction nozzles 55 are held at the rising end position.

  Thus, when the R-axis motor 51 is rotated, the rotary head 53 holding the N suction nozzles 55 via the index shaft 52 is rotated around the vertical axis AL (R-axis direction), and each suction nozzle 55 is rotated. Are sequentially stopped at N stop positions.

  One of the N stop positions is a component mounting position P1 for mounting the electronic component P on the circuit board B. The component mounting position P1 is also used as a receiving position for receiving the electronic component P from the tape feeder 21. doing.

  A drive gear 69 is fixed to the output shaft of the θ-axis motor 56. The drive gear 69 is meshed with a driven gear 63 on a rotating body 65 that is rotatably supported by the index shaft 52. A θ-axis gear 64 is formed on the rotating body 65 over a predetermined length in the axial direction, and the θ-axis gear 64 meshes with each nozzle gear 67 fixed to the nozzle holder 54 so as to be slidable relative to each other. Has been. As a result, when the θ-axis motor 56 is rotated, all the suction nozzles 55 are simultaneously rotated (spinned) with respect to the rotary head 53 via the drive gear 69, the driven gear 63, the θ-axis gear 64, and the nozzle gear 67. Is done.

  The mounting head 48 is provided with a lifting device 70 that lifts and lowers the nozzle holder 54 that is indexed to the component mounting position P1. The elevating device 70 uses a Z-axis motor 57 as a drive source, and an output shaft of the Z-axis motor 57 is supported between the frames 61 and 62 so as to be rotatable about an axis parallel to the vertical axis AL. 71 is connected. A ball nut 74 that converts the rotational motion of the Z-axis motor 57 into linear motion is screwed onto the ball screw shaft 71. The ball nut 74 is fixed to an elevating member 76 that is slidably guided in a vertical direction by a guide bar 75 that extends in the vertical direction and is fixed between the frames 61 and 62.

  The elevating member 76 is provided with a pressing portion 76a that abuts the upper end of the nozzle holder 54 indexed to the component mounting position P1 and presses the nozzle holder 54 downward in the Z-axis direction. Thereby, when the Z-axis motor 57 is rotated, the ball screw shaft 71 is rotated, and the elevating member 76 is guided to the guide bar 75 via the ball nut 74 and is moved up and down. When the elevating member 76 moves up and down, the nozzle holder 54 and the suction nozzle 55 indexed to the component mounting position P1 are raised and lowered via the pressing portion 76a.

  On the base 11, a first component camera 78 (see FIG. 1) that is a CCD camera that images the electronic component P sucked by the suction nozzle 55 from below is installed. The first component camera 78 captures an image of the electronic component P sucked by the suction nozzle 55 while moving from the component supply position 21a of the component supply device 20 onto the circuit board B.

  As shown in FIGS. 2 and 4, a background means 81 having a transparent ring 80 is detachably attached to the lower end of the rotary head 53 at the center of rotation thereof.

  The background means 81 is attached concentrically with the center of rotation of the rotary head 53 to the lower portion of the support block 83 fixed to the center of the lower end of the rotary head 53. The background means 81 has a cylindrical support 84 that is centered and fitted to the lower end portion of the support block 83 and is fixed by a bolt 85. A plurality of reference marks 86 that are imaged by the first component camera 78 are provided on the lower surface of the support 84.

  A cylindrical or polygonal transparent ring 80 is detachably attached to the support body 84, for example, concentrically with the rotational center of the rotary head 53 via a ring-shaped holding member 87 made of metal. It has become. The transparent ring 80 is made of, for example, acrylic resin. As shown in FIG. 5, a yellow fluorescent paint 88 is applied over the entire circumference on the inner peripheral surface of the transparent ring 80. A white paint 89 is applied around the periphery.

  Thus, by coating the fluorescent paint 88 on the inner peripheral surface of the transparent ring 80, the fluorescent paint 88 does not have a seam, and dust or the like does not easily adhere to the fluorescent paint 88. In addition, by applying the fluorescent paint 88 on the inner periphery of the transparent ring 80, the painted surface (fluorescent surface) visible from the outer periphery of the transparent ring 80 becomes a smooth surface without unevenness due to the influence of the surface roughness of the transparent ring 80. , Can emit uniform visible light.

  The transparent ring 80 coated with the fluorescent paint 88 is supported by the support body 84 via a holding member 87 slidably fitted on the outer periphery of the support body 84. The holding member 87 is detachably attached via a leaf spring 91 fixed to the support body 84 with screws 90 or the like. When the transparent ring 80 is attached to the support 84, the leaf spring 91 is engaged with the inner periphery engaging portion 87 a of the holding member 87 in a state where the transparent ring 80 is attached to the outer periphery of the holding member 87. By pressing the holding member 87 toward the stepped surface 84a of the support body 84 by the spring force of the transparent ring 80, the transparent ring 80 that engages with the outer peripheral engagement portion 87b is engaged with the stepped surface 84a of the support body 84, Positioned and held.

  In this case, the concentricity of the transparent ring 80 with respect to the rotation center of the rotary head 53 is not particularly required. Rather, the fluorescent paint 88 and the white paint 89 applied to the inner periphery of the transparent ring 80 are in contact with the outer periphery of the holding member 87. Therefore, it is preferable that there is an appropriate gap between the outer periphery of the holding member 87 and the coating surface of the inner periphery of the transparent ring 80 so as not to peel off.

  In addition, by applying the white paint 89 on the inner periphery of the fluorescent paint 88, the fluorescent paint 88 visible from the outer periphery of the transparent ring 80 can be brightened even when the holding member 87 is black, and the two-dimensional excellent in contrast. Images can be acquired. However, depending on the color of the holding member 87, the white paint 89 can be omitted.

  In FIG. 4, reference numeral 99 denotes a background plate fixed to the upper portion of the support 84 provided with the reference mark 86, and the background of the reference mark 86 imaged by the first component camera 78 is clearly shown by this background plate 99. Like to do.

  As shown in FIGS. 2 and 3, a mounting base 92 is attached to the second frame 62, and the electronic component P sucked by the suction nozzle 55 is imaged from the side to the mounting base 92, and the electronic part is taken. A second component camera 93 composed of a CCD camera that acquires a two-dimensional image of P is attached. A support bracket 94 is fixed to the mounting head 92 on the rotary head 53 side, and an ultraviolet light 96 that irradiates ultraviolet rays as irradiation means 95 is indexed to the component mounting position P1 on the support bracket 94. It is installed toward. The support bracket 94 is provided with two prisms 97 and 98.

  As shown in FIG. 3, the second component camera 93 and the ultraviolet light 96 are arranged on an extension line connecting the component mounting position P1 and the vertical axis AL of the rotary head 53. A plurality of parts cameras 93 are arranged on both sides of the optical axis.

  Accordingly, when the ultraviolet light is irradiated from the ultraviolet light 96 in the state where the suction nozzle 55 on the component mounting position P1 is moved to the uppermost end (the state shown in FIG. 2), the inner peripheral surface of the transparent ring 80 of the background means 81 The fluorescent paint 88 applied to the surface absorbs ultraviolet rays and emits visible light. Visible light radiated from the fluorescent paint 88 passes through the outer edge of the electronic component P, enters the second component camera 93 via the prisms 97 and 98, and enters the second electronic component P adsorbed by the suction nozzle 55. A dimensional image is acquired by the second component camera 93.

  Note that the second component camera 93 may acquire a two-dimensional image of the electronic component P sucked by the suction nozzle 55 adjacent to the suction nozzle 55 on the component mounting position P1, in this case. The two-dimensional image of the electronic component P can be acquired while the suction nozzle 55 on the component mounting position P1 is moving up and down to suck the electronic component P, and the tact time can be shortened.

  FIG. 6 shows a control device 100 that controls the electronic component mounting apparatus 10, and the control device 100 includes a CPU 101, a storage device including a ROM 102 and a RAM 103, and a bus 104 that connects them. An input / output interface 105 is connected to the bus 104, and an input device 106 including a keyboard and a mouse is connected to the input / output interface 105, and an output device 107 including a display unit is connected to the input / output interface 105.

  The input / output interface 105 is connected with a mounting control unit 108 for controlling the component supply device 20, the substrate transfer device 30 and the component transfer device 40, and the substrate camera 50 and the first and second component cameras. An image processing unit 109 for processing image data picked up by 78 and 93 is connected. The ROM 102 of the control device 100 stores a mounting program for mounting the electronic component P on the circuit board B, and the RAM 103 stores the positional deviation amount and the angular deviation amount recognized by the cameras 50, 78, 93, Parts data and the like are stored.

  The operation of mounting the electronic component P on the circuit board B in the electronic component mounting apparatus 10 having the above configuration will be described. First, when the control device 100 drives the conveyor belt of the substrate transport device 30, the circuit board B is guided to the guide rails 33A and 33B (34A and 34B) and transported to a predetermined mounting position. Then, the circuit board B is pushed up and clamped by the clamp device.

  Next, by driving the Y-axis servo motor 43 and the X-axis servo motor 47, the moving base 44 is moved in the X-axis and Y-axis directions, and the mounting head 48 is moved to the component supply position 21a of the component supply device 20. Is done. Subsequently, when the Z-axis motor 57 is rotated forward, the nozzle holder 54 indexed to the component mounting position P1 by the pressing portion 76a of the elevating member 76 is pushed downward against the urging force of the compression spring 68. The electronic component P is sucked by the suction nozzle 55.

  Thereafter, when the Z-axis motor 57 is reversed, the elevating member 76 is moved upward, and the nozzle holder 54 and the suction nozzle 55 are raised to the uppermost position by the urging force of the compression spring 68.

  In this state, ultraviolet light is irradiated from the ultraviolet light 96 toward the fluorescent paint 88 of the transparent ring 80. Thereby, the fluorescent paint 88 absorbs ultraviolet rays and emits visible light, and the visible light passes through the outer peripheral edge of the electronic component P and enters the second component camera 93. As a result, a two-dimensional image (XZ two-dimensional image viewed from the Y-axis direction) in which the portion radiated from the fluorescent paint 88 becomes a bright background and the tip of the electronic component P and the suction nozzle 55 is dark can be acquired. The two-dimensional image is processed as grayscale or monochrome binary two-dimensional image data, and the distance from the tip of the suction nozzle 55 to the lower surface of each electronic component P, that is, the height of the electronic component P is calculated. .

  A difference between the calculated data and the reference position data of each electronic component P from the tip of the suction nozzle 55 calculated in advance in the design stage, that is, “positional deviation” is obtained and compared with a threshold value. As a result, when the “positional deviation” exceeds the threshold value, it is determined that the electronic component P is attracted to the suction nozzle 55 (when there is no electronic part P or when the suction posture is abnormal). If the threshold is not exceeded, it is determined to be normal. The “positional deviation” data is stored in a predetermined storage area of the RAM 103 of the control device 100 and used when the electronic component P is mounted on the circuit board B.

  At this time, if it is determined that there is no electronic component P, the suction nozzle 55 can be immediately lowered to perform re-suction. Furthermore, when it is determined that the suction posture is abnormal, the electronic component P can be discarded in the disposal box.

  Next, when the R-axis motor 51 is rotated, the rotary head 53 is rotated by a predetermined angle, and the next suction nozzle 55 is indexed to the component mounting position P1. The electronic component P is sequentially sucked by the plurality of suction nozzles 55 by alternately raising and lowering the nozzle holder 54 by the lifting device 70 and intermittent rotation by the R-axis motor 51.

  Next, the moving base 44 is moved in the X-axis and Y-axis directions by the X-axis and Y-axis servomotors 47 and 43, and the mounting head 48 is moved above the first component camera 78. The second component camera 78 images all the electronic components P sucked by the suction nozzle 55 from below, and a two-dimensional image (XY two-dimensional image viewed from the Z-axis direction) of the electronic components P is acquired. The

  At this time, the position of the electronic component P is recognized with reference to the reference mark 86 by imaging the reference mark 86 provided on the lower surface of the support body 84 simultaneously with the electronic component P sucked by the suction nozzle 55. Can do. As a result, even when the electronic component P attracted to the suction nozzle 55 is recognized without stopping on the first component camera 78, it is possible to suppress the occurrence of imaging deviation, and the electronic component P with respect to the center of the suction nozzle 55. It is possible to accurately recognize misalignment and angular misalignment.

  Further, the moving base 44 is moved in the X-axis and Y-axis directions by the X-axis and Y-axis servomotors 47 and 43, and the mounting head 48 is moved above the circuit board B. At this time, the movement amount of the moving table 44 is corrected based on the “positional deviation” data obtained based on the XY two-dimensional image data. This absorbs not only the variation in the suction position of the electronic component P by the suction nozzle 55 but also the shift in the relative position of the mounting head 48 due to aging, thermal deformation, etc., so that the electronic component P is placed on the circuit board B at a predetermined position. Can be accurately positioned.

  Thereafter, when the Z-axis motor 57 is rotated in the forward direction, the nozzle holder 54 is pushed downward against the urging force of the compression spring 68 by the pressing portion 76 a of the elevating member 76, and the electronic component adsorbed on the adsorption nozzle 55 P is mounted on the circuit board B. At this time, the descent amount of the elevating member 76 is corrected based on the “positional deviation” data obtained based on the aforementioned XZ two-dimensional image data. That is, since the height (Z-direction length) of the electronic component P can be obtained from the XZ two-dimensional image data, the lowering amount (pushing amount) of the suction nozzle 55 can be finely adjusted. The impact given to P can be reduced. Thereafter, when the Z-axis motor 57 is reversed, the elevating member 76 is moved upward, and the nozzle holder 54 and the suction nozzle 55 are raised to the uppermost position by the urging force of the compression spring 68.

  In this state, by irradiating ultraviolet rays from the irradiation means 95, a two-dimensional image can be acquired by the second component camera 93, and the presence or absence of the electronic component P being taken home can be confirmed. Thereby, when the electronic component P is taken home, the suction nozzle 55 can be immediately lowered and reattached. By repeating the above operation, all the electronic components P are mounted on the circuit board B. Thereafter, the clamping of the circuit board B is released, the circuit board B is unloaded from the mounting position, and the mounting operation of the electronic component P on one circuit board B is completed.

  Next, a procedure for attaching the background means 81 including the transparent ring 80 to the support 84 fixed to the rotary head 53 will be described.

  Prior to attaching the background means 81 to the support 84, a fluorescent paint 88 is applied to the inner periphery of the transparent ring 80, and a white paint 89 is applied to the inner periphery of the fluorescent paint 88. The transparent ring 80 coated with the fluorescent paint 88 or the like is attached to the support body 84 together with the holding member 87 while being loosely fitted on the outer periphery of the holding member 87.

  That is, the holding member 87 loosely fitted to the outer periphery of the transparent ring 80 is fitted to the outer periphery of the support 84, and the end surface of the transparent ring 80 is engaged with the outer periphery engaging portion 87 a of the holding member 87. In this state, the leaf spring 91 that engages with the inner peripheral engagement portion 87 b of the holding member 87 is fixed to the support body 84 with a screw 90 or the like, so that the holding member 87 is supported by the spring force of the plate spring 91. Is pressed toward the stepped surface 84a. As a result, the transparent ring 80 that engages with the outer peripheral engaging portion 87 a of the holding member 87 is engaged and held by the stepped surface 84 a of the support body 84. In addition, when removing the transparent ring 80 for exchange etc., the procedure reverse to the above may be performed.

  In this case, an appropriate gap is provided between the outer periphery of the holding member 87 and the coating surface of the inner periphery of the transparent ring 80, so that the fluorescent paint 88 and the white paint 89 applied to the inner periphery of the transparent ring 80 are retained by the holding member 87. The fluorescent paint 88 and the white paint 89 are prevented from peeling off without contacting the outer periphery of the paint.

  Thus, by coating the inner surface of the transparent ring 80 with the fluorescent paint 88 that absorbs ultraviolet rays and emits visible light, the fluorescent surface that receives ultraviolet rays, that is, the painted surface viewed from the outer periphery of the transparent ring 80 is The surface of the transparent ring 80 is smooth due to the surface roughness, and visible light can be uniformly emitted over the entire circumference of the transparent ring 80.

  Moreover, the white paint 89 is applied to the inner periphery of the fluorescent paint 88, so that even when the black holding member 87 is provided on the inner side of the transparent ring 80, the fluorescent screen that receives ultraviolet light can be kept in a bright state. It is possible to acquire a highly accurate two-dimensional image.

  According to the above-described embodiment, the transparent ring 80 in which the rotation center portion of the rotary head 53 having the plurality of suction nozzles 55 provided on the circumference is coated with the fluorescent paint 88 that absorbs ultraviolet rays and emits visible light. Therefore, there is no need to arrange a light emitter such as an LED at the center of rotation of the rotating rotary head 53. Thereby, wiring to a rotation part etc. can be made unnecessary and design and an assembly can be made easy.

  Moreover, by applying the fluorescent paint 88 on the inner peripheral surface of the transparent ring 80, there is no seam on the circumference as compared with the case where a fluorescent seal is pasted on the outer periphery of a conventional cylindrical body, For this reason, even if the number of suction nozzles 55 provided on the circumference of the rotary head 53 increases, a two-dimensional image of the electronic component sucked by the suction nozzle can be obtained with high accuracy.

  In particular, by coating the fluorescent paint 88 on the inner peripheral surface of the transparent ring 80, it becomes difficult for dust or the like to adhere to the fluorescent paint 88, and the cleaning work can be unnecessary or reduced. Can be prevented. Therefore, delicate maintenance such as brightness adjustment accompanying peeling of the fluorescent paint 88 can be reduced, and a two-dimensional image of the electronic component P can be stably acquired over a long period of time.

  Furthermore, according to the above-described embodiment, the reference mark 86 is fixed to the support 84 fixed to the rotary head 53, and the transparent ring 80 can be attached to and detached from the support 84. In addition to being able to be replaced arbitrarily, even when the transparent ring 80 is replaced, the position of the reference mark 86 can be kept stationary, and operations such as reference alignment can be made unnecessary.

  In the above-described embodiment, the example in which the fluorescent paint 88 is applied to the transparent ring 80 as the background unit 81 and the ultraviolet ray is applied to the fluorescent paint 88 as the irradiation unit 95 has been described. The background means 81 is not limited to those that irradiate ultraviolet light, but the resin or glass attached to the rotation center of the rotary head 53 receives light from the irradiation means 95 and receives the light from the photosensitive section of the component camera 93. It may be constituted by a member obtained by painting or mixing a substance that converts light to sensitize the light.

  In the above-described embodiment, the example in which the moving table 44 is moved in the X-axis direction and the Y-axis direction by the XY robot has been described. However, for example, the moving table 44 is moved in the XY plane by an articulated robot such as a SCARA robot. The moving table 44 is not limited to the one that moves by the XY robot.

  In the above-described embodiment, the example in which the transparent ring 80 coated with the fluorescent paint 88 is detachable from the rotary head 53 has been described. However, the transparent ring 80 is not necessarily configured to be detachable.

  In the above-described embodiment, the example in which the fluorescent paint 88 is applied to the inner periphery of the transparent ring 80 has been described. However, the fluorescent paint 88 may be applied to the outer periphery of the transparent ring 80. It is possible to eliminate the seam in the case of attaching a fluorescent seal such as

  In the above-described embodiment, the example in which the transparent ring 80 is made of a transparent resin such as an acrylic resin has been described. However, the transparent ring 80 may be made of transparent glass.

  Furthermore, in the above-described embodiment, an example in which the fluorescent paint 88 is applied to the transparent ring 80 has been described. However, the ring or solid body is manufactured by mixing the fluorescent paint 88 with resin or glass. The background means 81 can also be configured by the entity. According to this, the painting work to the transparent ring 80 can be made unnecessary.

  Thus, the present invention can take various forms without departing from the spirit of the present invention described in the claims.

  DESCRIPTION OF SYMBOLS 10 ... Electronic component mounting apparatus, 11 ... Base, 44 ... Moving stand, 48 ... Mounting head, 53 ... Rotary head, 55 ... Adsorption nozzle, 70 ... Lifting device, 78, 93 ... Component camera, 80 ... Transparent ring, 81 ... background means, 86 ... fiducial mark, 87 ... holding member, 88 ... fluorescent paint, 89 ... white paint, 93 ... component camera, 95 ... irradiation means, 100 ... control device, P ... electronic component, B ... circuit board.

Claims (4)

A movable table movable in the XY plane with respect to the base;
A mounting head equipped with a plurality of suction nozzles on the circumference of a rotary head attached to the movable table and rotatable about an axis;
Background means for absorbing and emitting light energy;
Irradiating means for irradiating light toward the background means;
An electronic component mounting apparatus including a two-dimensional image in which the light emitted from the background means is a background, and a component camera that acquires the two-dimensional image of the electronic component sucked by the suction nozzle,
The background means is made of resin or glass, and includes a cylindrical or polygonal transparent ring that is detachably attached to a support body supported by the rotation center of the rotary head .
The background means is coated on the inner peripheral surface of the transparent ring with a fluorescent paint that converts light from the irradiating means to light that sensitizes the photosensitive part of the component camera to the inner peripheral surface of the transparent ring. An electronic component mounting apparatus characterized in that a white paint is applied to the inner peripheral surface of the fluorescent paint so that light that can be the background of the two-dimensional image can be emitted seamlessly over the entire circumference. A movable table movable in the XY plane with respect to the base;
A mounting head equipped with a plurality of suction nozzles on the circumference of a rotary head attached to the movable table and rotatable about an axis;
Background means for absorbing and emitting light energy;
Irradiating means for irradiating light toward the background means;
An electronic component mounting apparatus including a two-dimensional image in which the light emitted from the background means is a background, and a component camera that acquires the two-dimensional image of the electronic component sucked by the suction nozzle,
The background means is made of resin or glass, and includes a cylindrical or polygonal transparent ring that is detachably attached to a support body supported by the rotation center of the rotary head .
The background means is coated on the inner peripheral surface of the transparent ring with a fluorescent paint that receives light from the irradiating means and converts it into light that sensitizes the photosensitive part of the component camera. It can emit light that can be the background of dimensional images ,
An electronic component mounting apparatus , wherein a plurality of reference marks are integrally provided on the support, and the transparent ring is held in an axial direction by a holding member that is detachably attached to the support by a biasing member .   The electronic component mounting apparatus according to claim 2, wherein a white paint is applied to the inner peripheral surface of the fluorescent paint applied to the inner peripheral surface of the transparent ring. A movable table movable in the XY plane with respect to the base;
A mounting head equipped with a plurality of suction nozzles on the circumference of a rotary head attached to the movable table and rotatable about an axis;
Background means for absorbing and emitting light energy;
Irradiating means for irradiating light toward the background means;
An electronic component mounting apparatus including a two-dimensional image in which the light emitted from the background means is a background, and a component camera that acquires the two-dimensional image of the electronic component sucked by the suction nozzle,
The background means is made of resin or glass, and includes a cylindrical or polygonal transparent ring that is detachably attached to a support body supported by the rotation center of the rotary head .
The background means is manufactured by mixing the transparent ring with a fluorescent paint that receives light from the irradiating means and converts it into light that sensitizes the photosensitive part of the component camera. It can emit light that can be the background of dimensional images,
An electronic component mounting apparatus , wherein a plurality of reference marks are integrally provided on the support, and the transparent ring is held in an axial direction by a holding member that is detachably attached to the support by a biasing member .

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