JP3123832B2 - Component mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting apparatus for mounting an electronic component on a substrate.

[0002]

2. Description of the Related Art Hitherto, there have been proposed various component mounting apparatuses for recognizing a component to be mounted by image processing and reflecting the recognition result in a mounting operation. For example, JP-A-4-20
In Japanese Patent No. 6600, an image pickup device is attached to a mounting head, and a flat reflecting mirror having a reflecting surface having a fixed inclination angle with respect to a nozzle axis is attached around a component suction / transport shaft of the mounting head. "Electronic component detection device" in which an illuminating device is provided movably at the lower position of the sucked component, and the light reflected from the flat reflecting mirror is incident on the imaging device.
Is disclosed. Then, in the section of the detailed description of the invention, in addition to the plane reflecting mirror, a second plane reflecting mirror or a perforated right-angle prism is attached to the suction nozzle itself, and a silhouette image of a part smaller than the shaft diameter is also formed. An embodiment is described that leads to an imaging device.

[0003] Also, JP-A-2-19000 discloses that
Disclosed is an "electronic component recognition device" in which illuminating means for illuminating a component held by suction and transferred from below and imaging means for imaging reflected light from the component are provided, and a lower end suction surface of a suction nozzle is hardly reflected. Have been. This “electronic component recognition device” enables accurate image recognition of a component even if the suction surface of the nozzle protrudes from the external shape of the component held by suction.

[0004]

In the above-mentioned "electronic component detection device", when a component having a diameter as small as a suction nozzle is imaged, if a suction position shift occurs, the silhouette image is displayed as shown in FIG. The outer shape of the suction nozzle may protrude from the outer shape. Then, if this is imaged as it is and image recognition is performed, the position of the center of gravity of the component is calculated as a position shifted from the actual position, and the suction holding position of the component cannot be correctly recognized. To cope with this, if the suction nozzle part is composed of a perforated right-angle prism, the suction nozzle becomes expensive, and in addition, it overcomes the vulnerability of the nozzle to the impact applied to the nozzle when picking up parts or mounting it on a board There is a need to.

In the above-mentioned "electronic component recognition apparatus", it is necessary to apply a surface treatment to at least the component suction surface of the suction nozzle so as to make light hardly reflected. In consideration of such a point, the present invention provides a proper component even if the nozzle outer shape protrudes from the component outer shape when viewed from below without performing a special surface treatment on the suction nozzle or using an expensive optical component. It is an object of the present invention to provide a component mounting apparatus for recognizing an image of a suction holding position.

[0006]

According to a first aspect of the present invention, a suction nozzle is provided at the lower end of a component mounting head, and the suction nozzle protrudes downward at the time of mounting and mounting the component. A transmission illumination unit for illuminating the component from behind is provided. Then, in the vertical movement space of the suction nozzle,
A 45 ° reflecting surface enters or exits, and when entering, reflects the image of the component sucked by the suction nozzle in the horizontal direction.
A 5 ° mirror and a moving means for retreating the 45 ° mirror from the vertical movement space of the suction nozzle when picking up and mounting the component, and entering just below the suction nozzle when recognizing the image of the component are provided, and the mirror has entered just below the suction nozzle. 45, which reflects the horizontally reflected component image vertically upward and transmits light entering from behind itself in the horizontal direction.
Reflective illumination that illuminates the back surface of a component (hereinafter, the surface of the component that is sucked and held by the suction nozzle is referred to as the front surface, and the opposite surface is referred to as the back surface) via a half mirror and a 45 ° mirror behind the half mirror. Place the part. When capturing a vertically reflected component image, the operation of the transmission illumination unit and the reflection illumination unit is controlled according to the size of the component with respect to the component suction surface of the suction nozzle to capture only the component image and recognize the captured image. Thus, the suction position shift is detected, the shift amount is corrected, and the component is mounted.

In the second invention of the present application, the 45 ° half mirror of the first invention is referred to as “a mirror for transmitting the horizontal reflection component image and facing the 45 ° mirror when entering just below the suction nozzle. The reflective illuminating unit is disposed above the 45 ° half mirror, and the rear surface of the component is passed through a 45 ° half mirror and a 45 ° mirror. Illuminate. " When capturing a horizontally transmitted component image, according to the size of the component with respect to the component suction surface of the suction nozzle, the operation of the transmission illumination unit and the reflection illumination unit is controlled to capture only the component image and recognize the captured image. Thus, the suction position shift is detected, the shift amount is corrected, and the component is mounted.

In the third aspect of the present invention, the 45 ° mirror of the first aspect of the present invention uses the “45 ° reflecting surface to enter or exit the vertical movement space of the suction nozzle, and at the time of entry, the image of the component sucked by the suction nozzle. 45 ° half mirror that reflects light in the horizontal direction and transmits light entering from below vertically upwards. The 45 ° half mirror faces the 45 ° half mirror when entering just below the suction nozzle. Then, the image of the horizontal reflection component is reflected vertically upward. " Then, the reflection lighting section is referred to as “45 ° half mirror.
Attached below, and illuminate the back surface of the component via a 45 ° half mirror. ”When capturing a vertically reflected component image, the transmission illuminating unit is used according to the size of the component with respect to the component suction surface of the suction nozzle. Then, only the image of the component is fetched by controlling the operation of the reflection illuminating unit, and the pickup position is detected by recognizing the picked-up image.

In the fourth invention of the present application, the fourth invention
The 5 ° mirror is deleted, and a horizontally reflected component image is captured. At that time, according to the size of the component with respect to the component suction surface of the suction nozzle, the operation of the transmission illumination unit and the reflection illumination unit is controlled to capture only the component image, and the captured image is recognized to detect a suction position shift. The component is mounted after correcting the deviation amount.

[0010]

When the component sucked and held by the suction nozzle is viewed from below, if the component suction surface of the nozzle protrudes from the outer shape of the component, the component is illuminated from above and below, so that the protruded component suction surface can be detected. The brightness of the image approaches the brightness of the background. That is, only the back surface image of the component is selectively recognized without confusing a part of the component suction surface of the nozzle with a part of the component. Then, the rear surface image of the fetched component is recognized, the shift of the suction position of the component is detected, and the shift amount is corrected to mount the component.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the component mounting apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing one embodiment of the component mounting apparatus of the present invention. The component mounting apparatus 1 has a box-shaped base 10, on which an XY stage 2, a component mounting unit 3, a conveyor unit 4, and a first component supply unit 5 are arranged. Reference numeral 6 denotes a second component supply unit arranged beside the base 10, and supplies components to a component temporary positioning table 7 provided on the base 10. In addition, the image processing means 8 and the control means 9 are built in the base 10.

Next, the component mounting section 3 which is the gist of the present invention will be described in detail. FIG. 2 is a schematic front view of the component mounting section 3 in one embodiment of the component mounting apparatus of the present invention. The component mounting unit 3 is supported by the XY stage 2 in a suspended state, and includes the mechanism shown in FIG. 2 in the cover unit. Reference numeral 30 denotes a support plate of a component mounting portion mounted on the lower surface of the XY stage 2, and a linear motion unit 311 for vertically moving the mounting head 31 is vertically mounted on the front surface thereof. The linear motion unit 311 includes a ball screw, a ball nut, a linear guide bearing, a servomotor, and the like (not shown). The mounting head 31 is attached to a slider 312 that is fixed to the ball nut and moves up and down.

The mounting head 31 is attached to the slider 312 vertically downward, and holds, at its lower end, a suction nozzle 32 for sucking a component. The suction nozzle 32 has a square diffusion plate 321 at the upper part, and the diffusion plate 321 is attached so that the nozzle body penetrates its own center position. Reference numeral 33 denotes a transmissive illumination unit that illuminates the component sucked by the suction nozzle 32 from behind, and a plurality of Ls arranged in a ring shape at regular intervals on the inner peripheral surface of the cylindrical member 331.
It has an ED 332, and is provided at its lower end with a cylindrical light shielding plate 333 having a flange so that the light of these LEDs is not directly reflected on a 45 ° mirror described later. The transmitted illumination unit 33 is located below the suction nozzle 32 and is fixed to the support plate 30 such that the center of the cylindrical member 331 matches the center of the component mounting head. Then, the cylindrical member 331 and the light shielding plate 333, as shown in FIG.
The suction nozzle and a part of the mounting head can pass through the space surrounded by the LED 332 and the hollow portion of the light shielding plate.

When the component held by the suction nozzle stops at a predetermined position in the transmission illumination unit 33, the LED 33
2 and a 45 ° mirror that reflects the component image illuminated by the diffusion plate 321 in the horizontal direction. The 45 ° mirror 34 is at 45 ° with respect to the vertical movement axis of the mounting head 31.
To the moving means 35 so as to move linearly at an angle of
Attached via 41.

The moving means 35 comprises a timing belt, a pulley, a servomotor (not shown), a linear guide bearing 351 and a slider 352 which moves linearly along the bearing. This linear guide bearing 351 is attached to the support plate 30 at an angle of 45 °
Part of 2 meshes with the teeth of the timing belt. Then, when the timing belt is rotated by the specified amount by the servomotor and the pulley, the slider 352 linearly moves by the specified amount along the linear guide bearing 351. Relay board 34
1 has an L-shaped cross section, one end of which is attached to the lower surface of the slider 352, has a protruding surface on the near side in FIG. 2, and the 45 ° mirror 34 is fixed to the upper surface of this protruding surface. In this way, the 45 ° mirror 34 is retracted 45 ° above the vertical movement space of the suction nozzle 32 at the time of picking up and mounting components, and enters the 45 ° direction directly below the suction nozzle 32 at the time of component recognition.

Numeral 36 denotes a 45 ° half mirror attached to the support plate 30 via an angle 361, which is arranged at a position facing the 45 ° mirror 34 at the component recognition position.
° Reflects the horizontal reflection image from the mirror 34 vertically upward,
In addition, light entering from behind is transmitted in the horizontal direction. The angle 361 has an L-shaped cross section. The upper and lower sides of the 45 ° half mirror 36 are supported at both ends, and the reflection surface is fixed at 45 °, and is opposed to the 45 ° mirror 34. In addition, the angle 361 has a mounting surface for a later-described reflective illumination unit 37 in a portion located behind the 45 ° half mirror.

Reference numeral 37 denotes a reflection illuminator located behind the 45 ° half mirror and facing a horizontal reflection image from the 45 ° mirror. The reflection illumination unit 37 includes a substrate 371 and a plurality of LEDs 3 arranged in a matrix at regular intervals.
The board 371 is fixed upright to the angle 361 such that the LED arrangement surface faces the half mirror 45 °. Reference numeral 38 denotes an imaging unit that captures an image vertically reflected by the 45 ° half mirror 36 and an image that is vertically transmitted,
The support plate 3 is positioned directly above the 45 ° half mirror 36.
Attach vertically downward to 0.

Reference numeral 8 denotes an image processing means for recognizing and processing an image captured by the imaging means 38.
The control means 9 controls the component mounting operation. When the size of the component A is as small as the component suction surface of the suction nozzle 32, the control unit 9 turns on the reflection illumination unit 37 in addition to the transmission illumination unit 33 and controls the image processing unit 8. May assist in recognition work. Further, the control means 9 controls the vertical movement amount of the mounting head, that is, the linear motion unit 31.
In response to the setting of the amount of movement of the slider 312 in Step 1, the rotation of the servo motor of the moving means 35 is commanded.
2 moves linearly to retract the 45 ° mirror 34 from the vertical movement space of the suction nozzle 32 during component suction and component mounting, and to enter directly below the suction nozzle during component recognition.

The operation of the component mounting apparatus according to the present embodiment having such a configuration will be described. When the board P on which components are to be mounted is transported on the conveyor unit 4 and is held by a board positioning mechanism (not shown), first, the control unit 9 drives the XY stage 2 to The component mounting head 31 is stopped, for example, immediately above the component A positioned in a predetermined component supply cassette of the first component supply unit 5. Then, a servo motor (not shown) is driven to lower the slider 312, that is, the mounting head 31.
At this time, since the 45 ° mirror 34 is at the rising end and is separated from the vertical movement space of the suction nozzle 32, the suction nozzle 3
2 reaches the part A and holds it by suction. (Part A
Is a component having an outer shape that is equal to or slightly smaller than the component suction surface of the suction nozzle 32. )

After the components are sucked, the control means 9 controls the mounting head 3
1 and a predetermined position in the middle of the ascent (45 ° when the lower end of the component A sucked and held enters from the 45 ° direction).
When it reaches the position where it does not contact the mirror 34), the servo motor (not shown) of the moving means 35 is rotated by a predetermined amount. Then, the slider 352 moves along the linear guide bearing 351, and makes the 45 ° mirror 34 advance into the vertical movement space of the suction nozzle from the 45 ° direction.

When the suction nozzle 32 reaches a height at which the component is recognized, the control means 9 stops the mounting head 31 from rising, and moves the component A to a predetermined position in the transmission illumination section 33 as shown in FIG. The operation is stopped, and the LED 332 is turned on. Also,
The control means 9 is controlled by a component mounting program in advance.
It is input that the component A is a component that is as small as the component suction surface of the nozzle, and the LED 372 of the reflection illumination unit 37 is turned on according to the information. At this time, 4
Although the 5 ° mirror 34 is in the process of moving, since the mirror enters directly below the component A from the 45 ° direction, even if the movement is not stopped, the left end of the component A in FIG. At the time when the image is displayed on 34, the image pickup means 38 can take in the back side image of the component A and start inputting the image to the image processing means 8. That is, as long as the 45 ° mirror 34 moves in the direction of the reflection surface without including a motion component perpendicular to the reflection surface, the distance between the back surface of the component A and the 45 ° mirror 34 is constant,
The positional relationship that the back surface of the component A is at the focal length of the imaging unit 38 does not change during the movement period of the mirror 34. When the 45 ° mirror 34 enters under the component A, a partial image that is to form the entire back surface image of the component A later gradually appears on its reflection surface, and the 45 ° mirror 45 A corresponding image also appears on the half mirror 36, which is reflected vertically upward and sent to the imaging field of the imaging means 38. At the same time, a part of the illumination light of the reflection illuminator 37 that has passed through the 45 ° half mirror 36 is reflected vertically upward as the 45 ° mirror 34 enters, illuminating the back surface of the component A. The time when the whole image of the part A is obtained is the time when the input to the image processing means 8 is started.

FIG. 10 shows a component A imaged by the imaging means 38.
8 and 9 are explanatory diagrams of images captured when only the transmission illumination unit 33 and the reflection illumination unit 37 are turned on, respectively. When only the transmission illuminator 33 is turned on, as shown in FIG. 8, the diffuser portion serving as the background is bright, and the component A and the component suction surface of the suction nozzle protruding therefrom have an integrated silhouette like a single component. It becomes an image. When only the reflective illumination unit 37 is turned on, the diffused plate portion serving as the background is dim, the back surface of the component A is slightly bright, and the component suction surface of the nozzle is a very bright reflected light image. Although the former silhouette image can be binarized with an appropriate threshold value, the protruding portion of the nozzle cannot be removed. The latter reflected light image has three brightness levels, it is difficult to set an appropriate threshold, and it is not possible to easily extract an image of only the component A. Therefore, in the present invention, as described above, both the transmission illumination unit 33 and the reflection illumination unit 37 are turned on,
The image of only the part A shown in FIG. 10 is captured. That is,
The image of FIG. 9 is synthesized with the image of FIG. 8, the background diffusion plate is bright, the nozzle protruding portion is as bright as the diffusion plate, and only the back surface of the part A captures a light and bright image. The binarization may be performed with a threshold value corresponding to the image of only the component A, and the image processing may be performed.

While the image processing means 8 is recognizing the input image information of the component A, the control means 9 executes XY
The stage 2 is driven, and the mounting head 31 is moved to the conveyor section 4.
The substrate P positioned above is moved to a specified mounting position. The image processing means 8 finishes the image recognition of the component A during the movement of the mounting head, and the recognition result, that is, the component A
Is transmitted to the control means 9. Then, the control unit 9 reversely rotates the servo motor (not shown) of the moving unit 35 by a predetermined amount, and the slider 352 and the 45 ° mirror 3
4 is retracted upward by 45 ° while the mounting head 31 is being retracted.
Is corrected by the amount of shift of the suction position, and the substrate P is stopped at the mounting position. In this way, after the 45 ° mirror 34 has exited from the descending space of the component A and the suction nozzle 32,
The suction nozzle 32 is lowered onto the substrate P, and the component A is mounted.

FIG. 4 is a schematic front view showing a second embodiment of the component mounting section 3 in this embodiment, and only differences from the component mounting section shown in FIG. 2 will be described. 45 ° mirror 34
Is provided to the moving means 35 so that the relay block 3 moves horizontally in a direction perpendicular to the vertical movement axis of the mounting head 31.
Attached via 42. The linear guide bearing 351 constituting the moving means 35 is horizontally attached to the support plate 30,
The slider 352 is guided in the horizontal direction. Relay block 3
Reference numeral 42 has an upwardly inclined 45 ° surface at one end. The 45 ° mirror 34 is fixed to this surface, and the other end is connected to the slider 352. With this configuration, the 45 ° mirror 34 retracts in the horizontal direction from the vertical movement space of the suction nozzle 32 during component suction and mounting, and enters the horizontal direction directly below the suction nozzle 32 during component recognition. 45 ° half mirror 36
2 is supported at the same position as the 45 ° half mirror 36 in FIG. 2, but the angle 361 and the reflection illuminating unit 37 are arranged with respect to the position in FIG. 2 using the 45 ° half mirror 36 itself as a symmetric axis. They are arranged in symmetrical positions. That is, the reflection illumination unit 37 is fixed to a portion of the angle 361 located above the 45 ° half mirror 36. The angle 361 is provided with an opening 362 at a portion corresponding to the elevation projection of the 45 ° half mirror so as not to block an image entering the 45 ° half mirror 36 from the horizontal direction. As shown in FIG. 4, the imaging means 38 is located behind the 45 ° half mirror 36 and is mounted horizontally and horizontally so as to capture the horizontal reflection image from the 45 ° mirror 34.

The operation when using the component mounting section of FIG.
Only the differences will be described in comparison with the operation of the component mounting unit in FIG. 2 described above. At the time of component recognition, the 45 ° mirror 34 moves horizontally just below the suction nozzle 32, and image capturing of the component A is performed after the movement of the 45 ° mirror 34 is stopped. A part of the illumination light of the reflection illumination unit 37 is 45
The light is reflected in the horizontal direction by the half mirror 36 and further vertically upward by the 45 ° mirror 34 to illuminate the back surface of the component A. At the same time, when the 45 ° mirror 34 reflects the back surface image of the component A in the horizontal direction, the 45 ° mirror 34 transmits through the 45 ° half mirror 36 and the back surface image of the component A is captured by the imaging unit 38. After the image processing means 8 transmits the information on the position shift of the suction of the component A to the control means 9, the control means 9 reversely rotates a servo motor (not shown) of the moving means 35 by a predetermined amount to move the slider 352 and the 45 ° mirror 34. While retracting to the right in the drawing, the mounting head 31 is corrected by the above-described suction position shift amount and stopped at the mounting position of the substrate P. Then, after the 45 ° mirror 34 has retreated from the descending space of the component A and the suction nozzle 32, the suction nozzle 32 is lowered onto the substrate P, and the component A is mounted.

FIG. 5 is a partially omitted schematic front view showing a third embodiment of the component mounting section 3 in the present embodiment, and only the differences from the component mounting section shown in FIG. 2 will be described. .
Here, the 45 ° half mirror 36 is arranged at the position of the 45 ° mirror 34 in FIG. 2, and the 45 ° mirror 34 is arranged at the position of the 45 ° half mirror 36 in FIG. 45 ° half mirror 3
6 has an upper side and a lower side supported by an angle 343, and the reflection surface is fixed at 45 °. Angle 34
Reference numeral 3 denotes an L-shaped cross section, and a reflection illumination section 37 is attached to a portion corresponding to a plane projection of the 45 ° half mirror 36. The angle 343 extends in the depth direction in the figure, and is attached to the slider 352 of the moving unit 35 via the relay plate 344. The 45 ° mirror 34 is supported by a support block 363 having an upwardly inclined 45 ° surface.
6 and is fixed at a position facing the same.

The operation when using the component mounting section of FIG.
Only the differences will be described in comparison with the operation of the component mounting unit in FIG. 2 described above. At the time of component recognition, a part of the illumination light of the reflection illuminating unit 37 is transmitted vertically through the 45 ° half mirror 36 and is irradiated vertically upward to illuminate the back surface of the component A. The back side image of part A is 4
Reflected in the horizontal direction by the 5 ° half mirror 36, and further reflected vertically upward by the 45 ° mirror 34,
The image is captured by the imaging unit 38. The image processing means 8 is a component A
After transmitting the suction position shift information to the control means 9, the control means 9 reversely rotates a servo motor (not shown) of the moving means 35 by a predetermined amount, and moves the slider 352 and the 45 ° half mirror 3.
6. While retracting the reflective illumination unit 37 upward by 45 °,
The mounting head 31 is corrected by the suction position deviation amount,
It is stopped on the mounting position of the substrate P. Then, after the 45 ° half mirror 36 and the reflection illuminating unit 37 have exited the descending space of the component A and the suction nozzle 32, the suction nozzle 32
Is lowered onto the substrate P, and the component A is mounted.

FIG. 6 is a schematic front view showing a fourth embodiment of the component mounting section 3 in this embodiment, with a part thereof omitted, and only the differences from the component mounting section shown in FIG. 5 will be described. .
Here, the 45 ° mirror 34 is not provided, and the imaging means 38 is mounted horizontally and horizontally at a position facing the 45 ° half mirror 36.

The operation when using the component mounting section of FIG.
Only differences from the operation of the component mounting unit in FIG. 5 described above will be described. At the time of component recognition, the back surface image of the component A is reflected in the horizontal direction by the 45 ° half mirror 36 and is captured by the imaging unit 38. After the image processing means 8 transmits the information on the position shift of the suction of the component A to the control means 9, the control means 9
The same operation as described above is performed, and the component A is mounted on the board P.

In this embodiment, the moving means 35 is at 45 °.
Although the mirror 34 or the 45 ° half mirror 36 is linearly moved, the 45 ° mirror 34 may be rotated as shown in FIG. That is, a rotating shaft of a high rotor (trade name of a rotary air actuator) or a rotating shaft 353 of a pulse motor is fixed to one end of a relay plate 345 having an L-shaped cross section, and the other end thereof is located on the near side in FIG. The 45 ° mirror 34 is fixed on the upper surface of the protruding surface. Then, a high rotor or a pulse motor (not shown) is arranged on the back side of the support plate 30, and its rotating shaft 353 is attached to the support plate 30.
Is connected to the relay plate 345. In this way, at the time of component recognition, the control means 9 drives the high rotor to intermittently rotate the shaft 353 by 45 °, or drives the pulse motor to rotate the shaft 353 forward by 45 °, thereby causing the 45 ° mirror 34 to rotate.
Appear on the 45 ° reflecting surface of the vertical movement space of the suction nozzle 32. When the suction nozzle sucks or mounts a component, the control means 9 drives the high rotor to rotate the shaft 353.
Is intermittently rotated by 45 ° in the reverse direction, or by driving a pulse motor to reversely rotate the shaft 353 by 45 ° to maintain the reflection surface of the 45 ° mirror 34 in a vertical posture, thereby allowing the vertical movement space of the suction nozzle 32 to be maintained. Evacuation.

Other drive mechanisms for rotating the 45 ° mirror 34 include a solenoid, a solenoid and a rack and pinion, a mirror urged to a 45 ° position by a spring, and a pneumatic mirror. A cylinder, an air cylinder and a rack and pinion, a mirror urged to a 45 ° position by a spring to make a vertical posture by an air cylinder, a combination of a toggle spring and a high rotor or a motor, and the like are applicable.

[0032]

As described above, according to the component mounting apparatus of the present invention, even if the component suction surface of the nozzle protrudes from the external portion of the component held by suction, the protruding portion is not confused with a part of the component. Since image recognition is performed by selecting only the back surface image of the component, the holding position can be accurately recognized even for a component equal to or smaller than the component suction surface of the nozzle, and mounting accuracy is improved. In addition, since special surface treatment processing is not performed on the suction nozzle and expensive optical components are not used, it is possible to contribute to cost reduction of the mounting head unit.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the configuration of an embodiment of the component mounting apparatus of the present invention.

FIG. 2 is a schematic front view illustrating a configuration of a component mounting unit.

FIG. 3 is a schematic front view illustrating the operation of a component mounting unit.

FIG. 4 is a schematic front view showing a second embodiment of the component mounting section.

FIG. 5 is a schematic front view showing a third embodiment of the component mounting section.

FIG. 6 is a schematic front view showing a fourth embodiment of the component mounting section.

FIG. 7 is a schematic front view illustrating another embodiment of the moving means.

FIG. 8 is an explanatory diagram showing an image at the time of transmitted illumination captured by an imaging unit.

FIG. 9 is an explanatory diagram illustrating an image at the time of reflected illumination, which is captured by an imaging unit.

FIG. 10 is an explanatory diagram illustrating an image captured by an imaging unit at the time of simultaneous transmission and reflection illumination.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Component mounting apparatus 2 XY stage 3 Component mounting part 31 Component mounting head 32 Suction nozzle 33 Transmission illumination part 34 45 degree mirror 35 Moving means 36 45 degree half mirror 37 Reflection illumination part 38 Imaging means 8 Image processing means 9 Control means A component P board

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 3/30 H05K 13/00-13/04

Claims (4)

(57) [Claims] 1. A component mounting head provided in a component mounting unit that moves in the X-Y direction picks up a component, recognizes the held state of the picked-up component by image recognition, corrects a suction position shift amount, and places the component on a substrate. A suction nozzle provided at a lower end of a component mounting head and extending downward at the time of component suction and mounting, and a component which is disposed around a space in which the suction nozzle moves up and down, and the component is sucked. And a 45 ° mirror that causes a 45 ° reflecting surface to enter or exit the vertical movement space of the suction nozzle, and reflects the image of the component sucked by the suction nozzle in the horizontal direction when entering. Moving means for retracting the 45 ° mirror from the vertical movement space of the suction nozzle when picking up and mounting the component, and entering directly below the suction nozzle when recognizing the image of the component; Faces of the 45 ° mirror, said reflects the horizontal reflection component image vertically upward, and transmits light entering from behind its horizontally 45 °
A half mirror, a reflection illuminator disposed behind the 45 ° half mirror, and illuminating the back surface of the component via the 45 ° mirror; an imaging unit for capturing the vertical reflection component image; Image recognition means for recognizing the captured component image; and, at the time of imaging the component image, corresponding to the size of the component relative to the component suction surface of the suction nozzle, the transmission illumination unit, the moving unit,
A component mounting device comprising: a control unit that controls a reflection illumination unit and controls an operation of the device based on a recognition result of the image recognition unit. 2. The component mounting apparatus according to claim 1, wherein the 45 ° half mirror is configured to transmit the horizontal reflection component image by opposing the 45 ° mirror when entering just below the suction nozzle. And a 45 ° half mirror that horizontally reflects light entering from above ”, and a reflection illumination unit is disposed above the 45 ° half mirror, and a 45 ° half mirror and the 45 ° mirror A component mounting apparatus, wherein the reflection illuminating unit illuminates the rear surface of the component via the illuminating unit, and the imaging unit is an imaging unit that captures the horizontal transmission component image. 3. The component mounting apparatus according to claim 1, wherein the 45 ° mirror is configured such that a 45 ° reflecting surface enters or exits the vertical movement space of the suction nozzle, and is sucked by the suction nozzle when entering. Reflecting the image of the part
And a 45 ° half mirror that transmits light entering from below vertically upwards, and the 45 ° half mirror faces the 45 ° half mirror when entering directly below the suction nozzle, and the horizontal reflection component image is displayed. A 45 ° mirror that reflects vertically upwards ”and the reflective illumination section is a“ reflection illumination section that is mounted below the 45 ° half mirror and illuminates the back surface of the component via a 45 ° half mirror ”. Characteristic component mounting device. 4. The component mounting apparatus according to claim 3, wherein the configuration of the 45 ° mirror is deleted, and the imaging unit is “an imaging unit that captures the horizontal reflection component image”. apparatus.