JPH0414300A - Part recognizing device - Google Patents

Abstract

PURPOSE:To improve the strength of a parts sucking nozzle following the present electronic parts miniaturizing trend by providing a tapered section with a leading end section having an outside dimension smaller than that of electronic parts and a root section having an outside dimension larger then that of the electronic parts to the parts sucking nozzle. CONSTITUTION:When no electronic parts 14 are sucked to a parts sucking nozzle 13, the shades of the parts 14 and nozzle 13 are produced below the parts 14 and nozzle 13 by utilizing reflection of light. An optical box 16 takes the images of the shades of the parts 14 and nozzle 13 from the bottom and recognizes them. The angle of the tapered section 13a of the nozzle 13 is set at 20 deg. to 30 deg. so that the shade of the nozzle 13 produced by oblique lighting light from a reflecting plate 12 can be produced from the leading end section only an no shade can be produced from the larger root section. The outside dimension of the leading end section of the tapered section 13a is made smaller than that of the electronic parts 14 and outside dimension of the root section of the section 13a is made larger than that of the parts. Therefore, the strength of the nozzle 13 is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a component recognition device that recognizes an electronic component by illuminating and photographing the electronic component being transferred while being sucked and held by a suction nozzle.

Conventional Technology In order to recognize the shape and position of electronic components and suction nozzles and to accurately mount them at predetermined positions on a board, conventionally, an inverted cone-shaped reflective surface was provided on the lower surface of a suction head equipped with a suction nozzle.
A component recognition device that recognizes a suction nozzle and a component that is suction-held by the suction nozzle and transferred to a component mounting station includes an illumination device that illuminates the suction head from both sides, and an imaging device that images the electronic component and the suction nozzle from below. It is equipped with

Hereinafter, a conventional example will be explained based on FIGS. 3 to 5. In FIG. 3, reference numeral 1 denotes a suction head, which is equipped with a suction nozzle 3 at its tip.The suction nozzle 3 suctions an electronic component 5 from a component supply station and transfers it to a recognition station. Reference numeral 2 denotes an inverted conical reflector plate, which is fixed to the base of the suction nozzle 3, and when illuminated by the illumination tube 4, the electronic component 5 and the electronic component 5 are suctioned using the reflection of the light. If not, the shadow of the suction nozzle 3 is created downward. Reference numeral 6 denotes an optical box that images and recognizes the shadows of the electronic component 5 and the suction nozzle 3 created by the reflector 2 from below. In FIG. 5, an optical fiber 7 is connected to the end of the illumination tube 4, and the light emitted from the end face of the optical fiber 7 is converted into rectangular frit light by a merit section 8, and this frit light is focused by a lens 9. The reflection mirror 10 irradiates the reflection plate of the suction nozzle 3.

Problems to be Solved by the Invention However, in the conventional example described above, the inverted cone-shaped reflective surface of the suction nozzle is illuminated and the reflection of the light is used to image the electronic components and the shadow of the suction nozzle from below. The outer shape of the nozzle is straight, and is it the outer shape of an electronic component? lJ - Difficult to recognize without viewing. Therefore, as electronic components become smaller, there is a problem that the outer shape of the suction nozzle becomes thinner and its strength decreases.

In view of the above-mentioned problems, the present invention aims to increase the strength of a suction nozzle as electronic components become smaller.

Means for Solving the Problems In order to achieve the above object, the present invention provides a suction nozzle with a tapered part whose tip is smaller than the external dimensions of the electronic component and whose base is smaller than the external dimensions of the electronic component. It was established.

Effect According to the above configuration, even if the electronic component becomes minute, the strength of the suction nozzle is not reduced by using the tapered suction nozzle. Since no bending occurs, reliability and quality can be improved.

Example An embodiment of the present invention will be explained based on FIGS. 1 and 2.

In FIG. 1, reference numeral 11 denotes a suction head, which is equipped with a suction nozzle 13 having a tapered portion 13a with an inclination angle of 2o to 3o0 at its tip.
The electronic component 14 is suctioned by the suction nozzle 13 and transferred to the recognition station.

Reference numeral 12 denotes a reflector plate having an inverted conical reflector 12a, which is fixed to the base of the suction nozzle 13, and when illuminated by the illumination tube 15, uses the reflection of light to reflect the electronic components 14 and If the electronic component 14 is not attracted,
A shadow of the suction nozzle 13 is created below. Reference numeral 16 denotes an optical box that images and recognizes the shadows of the electronic component 14 and suction nozzle 13 created by the reflection plate 12 from below. Figure 2 shows the actual electronic component 14 and suction nozzle 13.
Shows the shadow of At this time, the tapered portion 1 of the suction nozzle 13
The reason why the shadow of the large outer shape of the root portion 3a is not reflected is that the angle of the tapered portion 13a is set from 20° to 30°, and the oblique illumination light from the reflector 12 is designed to only cast a shadow on the shape of the tip portion. has been done.

Here, the tip of the tapered portion 13a is smaller than the outer dimensions of the electronic component 14, and the base thereof is larger than the outer dimension of the electronic component 14. By doing this, the strength of the suction nozzle 13 is increased.

Effects of the Invention The present invention has the above-mentioned configuration, so that even if the electronic parts become minute, the suction nozzle can be provided with a tapered part, and the root part can be set to a larger outer dimension than the part, so that it does not affect part recognition. It is possible to increase the strength of the suction nozzle without applying any pressure.

As a result, even in the case of minute electronic components, the suction nozzle does not bend in the suction section and mounting section of the electronic component, so reliability and quality can be improved.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an imaging state. FIG. 3 is a configuration diagram of a conventional example, FIG. 4 is an explanatory diagram showing an imaging state, and FIG. 5 is a plan view of FIG. 3. 12...Reflector, 13...Adsorption nozzle, 13a...Tapered portion, 14...
Electronic parts, 15...Lighting tube, 16...
optical box. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] When the suction nozzle suction-holds the component and transfers it to the component mounting station, the suction nozzle A component recognition device comprising: a tapered portion having a tip portion smaller than the external dimensions of the component and a base portion larger than the external dimensions of the component.