WO2001018486A1 - Lecteur de marques et dispositif de montage de pieces electroniques - Google Patents

Lecteur de marques et dispositif de montage de pieces electroniques Download PDF

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Publication number
WO2001018486A1
WO2001018486A1 PCT/JP1999/004881 JP9904881W WO0118486A1 WO 2001018486 A1 WO2001018486 A1 WO 2001018486A1 JP 9904881 W JP9904881 W JP 9904881W WO 0118486 A1 WO0118486 A1 WO 0118486A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting
detected
light
mark
camera
Prior art date
Application number
PCT/JP1999/004881
Other languages
English (en)
Japanese (ja)
Inventor
Tomosuke Ohkawa
Tadao Okazaki
Original Assignee
Evest Corporation
Eicho Precision Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evest Corporation, Eicho Precision Co., Ltd. filed Critical Evest Corporation
Priority to PCT/JP1999/004881 priority Critical patent/WO2001018486A1/fr
Priority to AU56475/99A priority patent/AU5647599A/en
Publication of WO2001018486A1 publication Critical patent/WO2001018486A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/08—Monitoring manufacture of assemblages
    • H05K13/081—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines
    • H05K13/0812—Integration of optical monitoring devices in assembly lines; Processes using optical monitoring devices specially adapted for controlling devices or machines in assembly lines the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement

Definitions

  • the present invention is useful for reading a mark which is useful for detecting a position of a mark attached to a mounting board when mounting a semiconductor chip such as an IC or an LSI or an electronic component such as a diode or a resistor on the mounting board.
  • a semiconductor chip such as an IC or an LSI or an electronic component such as a diode or a resistor on the mounting board.
  • This mounting apparatus has a mounting head that moves in a horizontal direction in order to transfer electronic components housed in the component supply unit to a mounting board arranged adjacent to the component supply unit.
  • a work holder is mounted on the to be able to move vertically.
  • a camera is provided on the mounting head to irradiate light to the mounting board in order to accurately position the electronic components held by the work holder at predetermined positions on the mounted member such as the mounting board.
  • the position of the mark attached to the mounting board is detected, and the position where the electronic component is mounted is determined based on the position.
  • the surface of a mounting board may be finished to a degree close to a mirror surface, and in that case, the reflectance on the surface of the mounting board becomes extremely high.
  • the mark is reflected from the surface of the mounting board and is incident on the force mirror, making it impossible to distinguish between the mark and the ground on the mounting board, and the camera can identify the position of the mark on the mounting board. There is a problem of disappearing.
  • An object of the present invention is to enable the position of a mark attached to a member to be inspected to be accurately detected. Disclosure of the invention
  • the mark reading device of the present invention is a mark reading device that detects a mark attached to the surface of a detected member, is provided on a moving member that moves along the detected member, A light source for irradiating light, a camera provided on the moving member, for receiving light reflected by the detected member when irradiated from the light source, and disposed on an incident optical path from the light source to the detected member.
  • An incident-side polarization member, and a reflection-side polarization member disposed in a reflection optical path from the detected member to the camera, wherein at least one of the incident-side polarization member and the reflection-side polarization member is provided.
  • a mark attached to the detected member is rotatably detected by the camera.
  • an electronic component mounting device of the present invention is an electronic component mounting device for mounting an electronic component housed in a component supply unit on a member to be mounted, wherein a work holder for holding the electronic component is provided, A mounting head that is movable in the horizontal direction between above the component supply unit and above the mounted member; a light source provided on the mounting head, for irradiating the mounted member with light; and a light source provided on the mounting head.
  • a camera that receives light reflected by the mounted member when irradiated from the light source; an incident-side polarizing member disposed on an incident optical path from the light source to the mounted member; A mark disposed on the mounted member such that at least one of the incident-side polarizing member and the reflecting-side polarizing member is rotatable. To Characterized by being adapted to detect a serial camera.
  • the present invention even if the surface of the member to be inspected / the member to be mounted has a high reflectance close to a mirror surface, the light reflected from the surface incident on the camera is not reflected from the ground portion of the surface. Since the light is attenuated, the camera can receive the reflected light from the mark with clear contrast to the ground on the surface. This makes it possible to reliably detect the position of the mark.
  • Figure 1 shows an oblique view of the entire electronic component mounting device incorporating the mark reading device.
  • FIG. 2 is a sectional view taken along line 2-2 in FIG.
  • FIG. 3 is a sectional view taken along line 3-3 in FIG.
  • FIG. 4 is a cross-sectional view taken along line 414 in FIG.
  • FIG. 5 is a cross-sectional view showing the mark reading device. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a perspective view showing the entirety of an electronic component mounting apparatus 10 also called a chip mounter
  • FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1
  • FIG. 4 is an enlarged sectional view taken along line 3 of FIG. 3
  • FIG. 4 is an arrow view along line 4-14 in FIG.
  • the electronic component mounting device 10 has a device main body 11 having two column portions 11a and lib extending vertically and a horizontal beam portion 11c connected to these upper ends.
  • the columns 11a and 11b and the horizontal beams 11c are each formed by attaching a cover to the outside of the skeleton made of die steel, and penetrate the center of the main body 11 of the device. Holes 12 are formed.
  • a component support 13 is fixed to one side of the apparatus main body 11, and the component support 13 is provided with a component supply unit 14 as shown in FIG.
  • the component supply unit 14 provided on one side of the component support 13 is shown, but as shown in FIG. 2, the component supply 14 is provided on the component support 13. It is provided on both sides.
  • a large number of parts cassettes are loaded into the parts supply section 14.Each part cassette holds electronic components such as IC and LSI semiconductor chips and capacitors, diodes, and resistors. In this state, the tape wound in a reel is stored.
  • the electronic components to be mounted include those that are housed in a stick, in addition to those that are housed in a packer set, and those that are housed in a tray. Will be installed.
  • the stick is also called a magazine and is a pipe-shaped case with a rectangular cross section, in which electronic components are arranged and accommodated in a straight line. Rays are electronic components arranged and accommodated in a plane.
  • two conveyors 15 extending in the X-axis direction are provided above the component support base 13, and the mounting board on which electronic components are mounted by the conveyor 15 is provided.
  • 15a is carried in from the outside of the device body 11.
  • the two conveyors 15 can move close to and away from each other in the Y-axis direction according to the size of the mounting board 15a, so that the distance between them can be adjusted.
  • the conveyor 15 is omitted.
  • two mounting heads movably in two horizontal directions of the X-axis direction and the Y-axis direction 16 Is attached to the device body 11.
  • each guide rail 17 extending in the Y-axis direction
  • the movable beam 18 is slidably mounted on the guide rail 17 at the sliding block 17a provided on the base end side of the movable beam 18.
  • Each of the movable beams 18 is provided with two guide rails 19 extending in the X-axis direction, and a mounting head 16 is mounted along the guide rails 19 so as to be movable in the X-axis direction. I have.
  • two moving beams 18 each having a mounting head 16 are mounted on the apparatus main body 11, but in FIG. 2, for convenience of drawing, of the respective moving beams 18, Only guide rails 19 are shown. However, a component mounting apparatus having one mounting head 16 with one moving beam 18 may be used.
  • the guide rail 19 is attached to the lower part of the cantilevered moving beam 18 as shown in the figure, and extends from the tip of the moving beam 18 to below the horizontal fixed beam 11c.
  • the mounting head 16 that moves in the horizontal direction while being suspended on 19, uses a space below the horizontal fixed beam 1 1c to secure a wide moving stroke in the X-axis direction. I have.
  • the mounting head 16 has a holder 21 to which a sliding block 19 a that slides along each guide rail 19 is fixed. 1 constitutes the mounting head body.
  • Two bearing blocks 22 are mounted on the holder 21.
  • Four hollow shafts 23 are mounted on each bearing block 22 so that they can slide freely in the axial direction and rotate freely. ing. Therefore, a total of eight hollow shafts 23 are mounted on one mounting head 16.
  • a work holder 24 is attached to the tip of each hollow shaft 23, and the electronic component E is held by the work holder 24.
  • a vacuum suction suction nozzle or a drip hand having fingers for gripping electronic components is used.
  • a screw shaft 28 is rotatably attached to a support member 27 fixed to the holder 21, and a vertically movable plate 29 is screwed to the screw shaft 28.
  • a vertically movable plate 29 is screwed to the screw shaft 28.
  • Eight pneumatic cylinders 26 are attached to the vertical movement plate 29 corresponding to the eight work holders 24, and the piston rods driven by the respective pneumatic cylinders 26 are driven via drive levers. It is connected to the hollow shaft 23. Therefore, the work holder 24 attached to the lower end of the hollow shaft 23 combines the vertical movement of the vertical movement plate 29 and the pneumatic cylinder 26 and reciprocates in the vertical direction, that is, the Z-axis direction. Will be.
  • a mark reading device 30 for detecting the position of the mark attached to the mounting board 15a is provided on the mounting head 16, and based on the position of the mark detected by the mark reading device 30. The position at which the electronic component E is mounted on the mounting board 15a is calculated.
  • FIG. 5 is a cross-sectional view showing the mark reading device 30 provided on the mounting head 16.
  • the camera 21 is mounted on the holder 21 of the mounting head 16 with the light receiving surface facing down.
  • a lamp 33 as a light source for irradiating light to the beam splitter 32 arranged below is attached to the holder 121. Therefore, The light from the lamp 33 is radiated through the beam splitter 32 toward the mounting board 15 a below the camera 31, and the reflected light from the mounting board 15 a passes through the beam splitter 32. The light is reflected by the light-receiving surface 31 a of the camera 31 via the camera.
  • the holder 21 is provided with a rotatable rotating cylinder 34, and an incident side polarizing member 35 made of a polarizing plate and also called a polarizer is attached to the rotating cylinder 34.
  • the incident side polarizing member 35 is arranged in the incident light path from the lamp 33 to the mounting board 15a.
  • a reflection-side polarization member 36 which is made of a polarizing plate and is also called an analyzer, is disposed in a reflection light path from the mounting board 15 a to the camera 31.
  • Each of the polarizing members 35 and 36 is formed by an element that converts natural light into linearly polarized light, and includes a polarizing prism, a polaroid using dichroism, and a glass plate using reflection at a polarization angle. Can be used.
  • the light emitted from the lamp 33 as a light source to the surface of the mounting board 15a passes through the rotatable incident-side polarizing member 35, and by rotating the incident-side polarizing member 35, The position of the polarization plane can be changed.
  • the irradiation light from the lamp 33 toward the surface of the mounting substrate 15a is polarized, and the mark M
  • the reflected light from the mounting board 15a including the part of the mark a is attenuated in the parts other than the mark M and reflected to the camera 31, and the reflected light from the mark M is not attenuated.
  • the contrast of the mark M can be clarified and the position of the mark M can be reliably detected.
  • one of the mounting heads 16 is moved along the guide rails 17 and the moving beam 18 is moved in the Y-axis direction.
  • the mounting head 16 is moved in the X-axis direction along the guide rail 19 provided on the beam 18 so as to be moved in the horizontal direction.
  • one mounting head 16 is moved near the mark M attached to the mounting substrate 15a. This In this state, turn on the lamp 33 and capture the image of the mark M on the light receiving surface of the camera 31 to detect the position of the mark M accurately.
  • the position of the mounting board 15a can be accurately detected from the position of each mark M. If the position of the mounting board 15a is obtained, the position of each electronic component E to be arranged on the mounting board 15a can be calculated based on data stored in a memory in advance.
  • each mounting head 16 is used.
  • the electronic component E is mounted on the mounting board 15a. At this time, the horizontal movement of each mounted head 16 is controlled so that the mounted heads 16 do not interfere with each other.
  • each mounting head 16 is moved to a predetermined position of the component supply unit 14, and one of the eight work holders 24 provided on the mounting head 16 is supplied with a predetermined voltage. Position it on the upper end of the slave part E.
  • the work holder 24 is moved down to the position of the electronic component E, and the electronic component E can be held.
  • the mounting head 16 is moved in the horizontal direction to mount the mounting head 1 at a predetermined position on the mounting board 15a. Stop 6.
  • the electronic component E can be arranged on the mounting board 15a by moving the hollow shaft 23 holding the electronic component E downward in the same manner as described above.
  • a mark M is attached to each position where the electronic component E is to be mounted, and when the mounting head 16 is transported to the corresponding mounting position, the mounting head 1 is determined based on the mark M.
  • the horizontal position 6 may be corrected.
  • the mark reading device of the present invention includes: Used in electronic component mounting equipment, but can be applied not only to electronic component mounting equipment but also to various types of devices as long as it detects marks on the surface of a member with high reflectivity to be detected. .
  • a camera and a light source are provided on a moving member that moves along the surface of the detected member.
  • the method is applied to mount a plurality of types of electronic components E on the mounting board 15a. May be applied.
  • the incident side polarizing member 35 arranged in the incident optical path is rotated to fix the reflecting side polarizing member 36 arranged in the reflected optical path. 5 may be fixed, and the reflection side polarizing member 36 may be rotated.
  • the polarizing members are arranged on the incident light path from the light source to the detected member and the reflected light path from the detected member to the camera, so that the surface of the detected member has a mirror-like surface. Even if it has a high reflectance, it is possible to detect the mark attached to the detected member.
  • this mark reading device is incorporated in an electronic component mounting device, the mounting efficiency of the electronic component on a mounting board or an inspection board can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Operations Research (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Supply And Installment Of Electrical Components (AREA)

Abstract

L'invention porte sur une tête (16) de détection de la position d'une marque faite sur un matériau à examiner, comportant une lampe (33) éclairant une plaquette (15a) de circuit et une caméra (31) recevant la lumière réfléchie par la plaquette (15a). Un polariseur (35) est placé sur le chemin optique allant de la lampe (33) à la plaquette, et un autre polariseur (36) l'est sur le chemin optique allant de la plaquette (15a) à la caméra (31). La lumière réfléchie par une marque (M) se distingue nettement de celle réfléchie par les autres zones de la plaquette (15a) même si la réflectivité de la surface de la plaquette (15a) est élevée.
PCT/JP1999/004881 1999-09-08 1999-09-08 Lecteur de marques et dispositif de montage de pieces electroniques WO2001018486A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP1999/004881 WO2001018486A1 (fr) 1999-09-08 1999-09-08 Lecteur de marques et dispositif de montage de pieces electroniques
AU56475/99A AU5647599A (en) 1999-09-08 1999-09-08 Mark reader and apparatus for mounting electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/004881 WO2001018486A1 (fr) 1999-09-08 1999-09-08 Lecteur de marques et dispositif de montage de pieces electroniques

Publications (1)

Publication Number Publication Date
WO2001018486A1 true WO2001018486A1 (fr) 2001-03-15

Family

ID=14236653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/004881 WO2001018486A1 (fr) 1999-09-08 1999-09-08 Lecteur de marques et dispositif de montage de pieces electroniques

Country Status (2)

Country Link
AU (1) AU5647599A (fr)
WO (1) WO2001018486A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0289305U (fr) * 1988-12-27 1990-07-16
JPH07243811A (ja) * 1994-03-08 1995-09-19 Rohm Co Ltd 電子部品における標印の読み取り方法
JPH0816787A (ja) * 1994-06-28 1996-01-19 Yamaha Motor Co Ltd 実装機の位置補正方法及び装置
JPH09264722A (ja) * 1996-03-28 1997-10-07 Sony Corp 外観検査方法およびその装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0289305U (fr) * 1988-12-27 1990-07-16
JPH07243811A (ja) * 1994-03-08 1995-09-19 Rohm Co Ltd 電子部品における標印の読み取り方法
JPH0816787A (ja) * 1994-06-28 1996-01-19 Yamaha Motor Co Ltd 実装機の位置補正方法及び装置
JPH09264722A (ja) * 1996-03-28 1997-10-07 Sony Corp 外観検査方法およびその装置

Also Published As

Publication number Publication date
AU5647599A (en) 2001-04-10

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