JP4316043B2 - Parts mounting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component mounting machine including a component mounting head on which a plurality of types of suction nozzles are mounted so as to be attachable / detachable or selectively switchable, and more particularly to a component mounting machine including a means for recognizing a component sucked by a suction nozzle. It is.
[0002]
[Prior art]
In recent years, the use of large components has increased due to the one-chip electronic components, and high-speed mounting on large components is required in electronic component mounting machines. Conventionally, in an electronic component mounting machine that mounts electronic components of various sizes on a printed circuit board, a plurality of types of suction nozzles can be attached to and detached from the component mounting head or can be selectively switched. A suction nozzle with a diameter is used, and a small suction nozzle is used for a small part.
[0003]
In addition, in order to recognize the shape and suction posture of the electronic component sucked by the suction nozzle, as shown in FIGS. 2 (a) and 2 (b), the component recognition means 6 for recognizing the electronic component 10 and the electronic component Component illumination means 11 and 12 for illuminating 10 are provided in the component recognition station.
Further, as shown in FIG. 2A, when the electronic component 10 is smaller than the reflecting member 7, the illumination light from the component illuminating means 11 is reflected toward the electronic component 10 by the reflecting member 7, and the transmitted light image is reflected. In the case of a large component having a component larger than that of the reflecting member 7, as shown in FIG. 2B, the suction nozzle 5 is provided so as to be able to be opened and closed so as to sandwich the suction nozzle 5 from both sides. The reflected light image of the component is recognized by the shutter member 13 that absorbs the irradiation light applied to the component 10.
[0004]
In the case of a component mounting head having a plurality of nozzle mounting portions, the nozzles are arranged at equal intervals as shown in FIG.
[0005]
[Problems to be solved by the invention]
However, in the above conventional example, when a large component is recognized, a shutter opening / closing operation is performed, so that it is 2 to 3 times as compared with a case where this operation is not performed (for example, when there is no shutter opening / closing operation, 0 per component). When the shutter opening / closing operation is performed for 2 seconds, the part recognition time of 0.4 to 0.6 seconds) is required, and there is a problem that large parts cannot be mounted at high speed. This is because the interval between adjacent nozzles is constant, and the nozzle and the reflecting member cannot be enlarged.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting facility that solves the above problems and enables high-speed and stable mounting of large-sized electronic components.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a component mounting machine according to the present invention includes a component mounting head in which a plurality of large and small component suction nozzles are arranged on the same circumference as the axis and at intervals according to the size of the nozzles; Recognizing means for recognizing the transmitted light image or reflected light image of the component sucked by the suction nozzle and the illumination light provided on the component suction nozzle and irradiated from the side of the recognition means is reflected toward the suction component and the recognition means. The size of the reflector is sized to match the size of the component suction nozzle, and the size of the reflector is equal to the size of the component suction nozzle. The illumination light absorbing member is provided.
[0008]
[Action]
According to the above configuration of the present invention, a plurality of large and small component suction nozzles are arranged in the component mounting head at intervals corresponding to the size, thereby providing a larger nozzle and reflecting member or illumination light absorbing member than conventional ones. be able to. As a result, since the nozzle and the reflecting member or the illumination light absorbing member are conventionally the same size, a shutter operation is required when recognizing a large component. By selecting the suction nozzle, it is not necessary to perform a shutter operation even for a large component, and the component mounting time can be shortened.
[0009]
According to a first aspect of the present invention, there is provided a component mounting head configured such that a plurality of component suction nozzles provided with a reflecting member or an illumination light absorbing member can be switched, and the component mounting head is moved. Placed in a component recognition station that recognizes a transmitted light image or reflected light image of the sucked component by sucking with a component suction nozzle that enables switching of the component mounting head from a component supply unit that supplies various electronic components. and a recognition unit that, the component recognition station is arranged toward the reflecting member component suction nozzle in which the reflective member is provided is irradiated with illumination light, the reflected light of the component sucked to the suction nozzle A first illumination unit provided around the image input unit of the recognition unit for irradiation from above, and a unit provided with the illumination light absorbing member provided in the component recognition station In a component mounting machine comprising: second illumination means disposed around an image input unit of the recognition means for irradiating illumination light to the lower surface of the component sucked by the article suction nozzle;
When the component mounting head is moved to the component recognition station and the component sucked by the component sucking nozzle is recognized on the recognition means, the reflecting member has a reflecting member. Reflects the illumination light emitted from the first illumination means toward the suction component and the recognition means, and when the component suction nozzle has an illumination light absorption member, the illumination light absorption member is the second illumination. Absorbs the illumination light applied to the suction component from the means,
The component suction nozzle is mounted on a component mounting head with a plurality of large and small nozzles having the same center axis on the same circumference and at an interval according to the size of the nozzle, and the reflecting member is a component suction nozzle provided with the same The illumination light absorbing member is made larger than the component sucked by the component suction nozzle provided with the illumination light absorbing member, and the component mounting head has a plurality of large and small component suction nozzles. Can be provided with nozzles and reflecting members or illumination light absorbing members that are larger than conventional ones, so that the nozzles and the reflecting members or illumination light absorbing members are conventionally identical. Because of its size, a shutter operation was required when recognizing large parts, but in the present invention, the suction nozzle is set according to the size of the parts. By-option, even large components, it is not necessary to the shutter operation has the effect capable of shortening the component mounting time.
[0010]
The embodiment of the present invention has been described with reference to FIGS. In the figure, 1 is a component supply unit, 2 is a printed circuit board, 3 is an XY table, 4 is a component mounting head, 5 is a suction nozzle, 6 is a recognition means, 7 is a reflecting member, 10 is an electronic component, 11 is a first 1 illumination means, 12 a second illumination means, 13 a shutter member, and 14 an illumination light absorbing member.
[0011]
As shown in FIG. 3, the component mounting machine of the present invention is provided between a component supply unit 1 that supplies various electronic components to be mounted on a printed circuit board 2 and an XY table 3 on which the printed circuit board 2 is placed. Further, twelve component mounting heads 4 arranged in an annular shape are disposed, and these component mounting heads 4 are configured to intermittently move clockwise relative to _twelve stations S _{1 to} S ₁₂ . Yes.
[0012]
The first station S ₁ is a component take-out station, and the suction nozzle 5 of each component mounting head 4 sucks and takes out a predetermined electronic component 10 from the component supply unit 1. The second station S ₂ is empty station. Third station S ₃ rotates the suction nozzle 5 to the center pivot axis for adjusting the mounting position of the component.
The fourth station S ₄ is a component recognition station, and a recognition means 6 for recognizing the shape and suction posture of the electronic component 10 sucked by the suction nozzle 5 is arranged. Further, as shown in FIG. 2, the component recognition station S ₄ is irradiated with illumination light toward the reflection member 7, and first illumination means 11 for irradiating the reflected light from above the electronic component 10. And second illumination means 12 for irradiating the lower surface of the electronic component 10 with illumination light. As shown in FIG. 4, the second illumination unit 12 is disposed around the image input unit of the component recognition unit 6.
[0013]
In the fifth station S _5, the correction of the rotational position of the electronic component 10 is performed. The sixth station S ₆ is an empty station. At the seventh station S ₇ , the electronic component 10 is mounted on the printed circuit board 2. Eighth station S ₈ is a nozzle return station returning the suction nozzle 5 that has been used on the upper side. At the ninth station S ₉ , the electronic component 10 that is not mounted because it is a defective product is discharged. The tenth station S ₁₀ is a nozzle switching station, and switching of the suction nozzle 5 used according to the size of the electronic component 10 to be sucked next is performed for each component mounting head 4. 11th station S ₁₁ is a nozzle out station issuing a suction nozzle 5 which is switched at 10 stations S ₁₀ on the lower side. 12th station S ₁₂ is a station return nozzle origin returning the suction nozzle 5 which is rotationally adjusted at the third station S ₃ to the original rotational position.
[0014]
Next, the component mounting head of FIG. 1 will be described.
The component mounting head includes five nozzle mounting portions, and the suction nozzle 5 can be switched and used by rotating the component mounting head around a vertical axis. These five nozzles are switched and used depending on the size of the electronic components to be picked up. FIG. 1A shows that the nozzles are arranged at equal intervals, and the reflecting members have the same size. 1B and 1C show that the nozzles are arranged at intervals according to the size of the nozzles.
[0015]
With this arrangement, the size of the reflecting member 7 and the illumination light absorbing member 14 can be increased according to the size of the nozzle.
In the case of FIG. 1A, the electronic component 10 is larger than the reflecting member 7, and the transmitted light of the component 10 is reflected by the reflecting member 7 that reflects the illumination light emitted from the illumination means 11, as shown in FIG. The image cannot be recognized. In this case, as shown in FIG. 2B, the shutter 13 is closed and the reflected light image is recognized.
[0016]
In the case of FIG. 1B, since the electronic component 10 is smaller than the reflection member 7, the transmitted light image from the reflection member 7 can be recognized as shown in FIG.
In the case of FIG. 1C, since the electronic component is smaller than the illumination light absorbing member 14, the illumination light absorbing member 14 absorbs illumination light from the illumination means 12 as shown in FIG. Can be recognized.
[0017]
As described above, according to the present embodiment, the nozzles are arranged at intervals according to the size of the component suction nozzle, thereby providing a larger nozzle and a reflecting member or an illumination light absorbing member than when arranged at equal intervals. Therefore, even for a large component that conventionally requires a shutter operation, it is not necessary to perform the shutter operation, and the component mounting time can be shortened.
[0018]
【The invention's effect】
As described above, according to the present invention, by arranging a plurality of large and small component suction nozzles in the component mounting head at intervals according to the size, the nozzle and the reflecting member or the illumination light absorbing member larger than the conventional one are provided. Can do. Conventionally, since the nozzle and the reflecting member or the illumination light absorbing member have the same size, when a large component is recognized, a shutter operation is required. However, in the present invention, the suction nozzle is adapted to the size of the component. By selecting, it is not necessary to perform a shutter operation even for a large component, and the component mounting time can be shortened. Further, a large nozzle having a high suction force can be arranged, and an effect that a large component can be mounted at high speed and stably can be obtained.
[Brief description of the drawings]
FIG. 1A is a plan view showing an arrangement state of a conventional nozzle and a reflecting member, FIG. 1B is a plan view showing an arrangement state of a nozzle and a reflecting member of the present invention, and FIG. It is a top view which shows the arrangement | positioning state of an illumination light absorption member.
2A is a front view showing a recognition state of a component outer shape by a transmitted light image, FIG. 2B is a front view showing a recognition state of a reflected light image of the lower surface of the component, and FIG. 2C is a component larger than a reflecting member; The front view which shows the state which cannot recognize, (d) is a front view which shows the recognition state by the transmitted light image of the large component external shape in the state which attached the large reflective member, (e) is a large illuminating light absorption member It is a front view which shows the recognition state by the reflected light image of a large sized component in the state which attached.
FIG. 3 is a plan view showing an overall schematic configuration of the component mounting machine.
FIG. 4 is a perspective view showing recognition means and second illumination means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Component supply part 2 Printed circuit board 3 XY table 4 Component mounting head 5 Suction nozzle 6 Recognition means 7 Reflective member 10 Electronic component 11 First illumination means 12 Second illumination means 13 Shutter member 14 Illumination light absorption member

Claims (1)

A component mounting head configured to be able to switch between a plurality of component suction nozzles provided with a reflecting member or an illumination light absorbing member, and the component from a component supply unit that moves the component mounting head and supplies various electronic components A recognition means disposed at a component recognition station that recognizes a transmitted light image or a reflected light image of the sucked component that is picked up by a component suction nozzle that is capable of switching the mounting head; and disposed at the component recognition station. irradiating illumination light to the set by the reflecting member of the suction nozzle in which the reflective member is provided, an image input of said recognition means to illuminate the reflected light from the upper side of the component sucked to the suction nozzle a first illumination means provided around the periphery parts under the part where the illumination light absorbing member is disposed in the component recognition station is attracted to the suction nozzle which is provided In the component mounting machine and a second illumination means wherein disposed in the image input section surrounding recognition means for irradiating illumination light to,
When the component mounting head is moved to the component recognition station and the component sucked by the component sucking nozzle is recognized on the recognition means, the reflecting member has a reflecting member. Reflects the illumination light emitted from the first illumination means toward the suction component and the recognition means, and when the component suction nozzle has an illumination light absorption member, the illumination light absorption member is the second illumination. Absorbs the illumination light applied to the suction component from the means,
The component suction nozzle is mounted on a component mounting head with a plurality of large and small nozzles having the same center axis on the same circumference and at an interval according to the size of the nozzle, and the reflecting member is a component suction nozzle provided with the same A component mounting machine characterized in that the illumination light absorbing member is made larger than a component sucked by a component suction nozzle provided with the illumination light absorbing member.

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