JPH043500A - Suction nozzle for electronic-component mounting machine - Google Patents

Abstract

PURPOSE:To improve suction force, to stabilize the attitude of suction and to prevent the leakage of air by notching a groove directed outward from a suction hole to the suction surface of an suction nozzle. CONSTITUTION:A suction nozzle is composed by providing a suction hole 3 allowing the flowing of air and a flat adsorption surface 4 abutted against the upper section of an electronic part 1. A plurality of dead-end grooves 6 radially directed to the outside centering around the suction hole 3 are notched to said suction surface 4, and the grooves 6 have a function enlarging the working range of air. Even when the suction surface 4 and an annular groove 7 positioned at the outside of the suction hole 3 are notched while a plurality of relay grooves 8 communicating the annular groove 7 and the adsorption hole 3 are notched, the same working effect can be expected.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a suction nozzle for an electronic component mounting machine that vacuum suctions electronic components.

[Conventional technology]

Figures 5 to 7 show the suction nozzle of a conventional electronic component mounting machine disclosed in Japanese Patent Application Laid-Open No. 63-143900, etc. In the figure, (1) is an electronic circuit board (not shown). (2) is a cylindrical suction nozzle that vacuum-suctions this electronic component (1),
This suction nozzle (2) generally has a suction hole (3) that allows air circulation and a flat suction surface (4) that comes into contact with the top of the electronic component (1), as shown in Figures 5 and 6. It is configured with.

After the suction nozzle (2) contacts the top of the electronic component (1), negative pressure (vacuum) is created inside the suction hole (3), thereby vacuum suctioning the electronic component (1). Or, with this alone, the large electronic component (1) may not be able to be vacuum-adsorbed reliably. In that case, as shown in Fig. 7, there is a circular recessed hole (5) in the suction surface (4) that communicates with the suction hole (3).
This was dealt with by making a recess.

[Problem to be solved by the invention]

Since the suction nozzle of the conventional electronic component mounting machine was constructed as described above, the suction nozzle (2) having the structure shown in FIGS. 5 and 6 sometimes lacked suction force. Also,
In the case of the suction nozzle (2) having the structure shown in Fig. 7, the suction force is improved, but since the action area of the suction surface (4) is small, the suction position of the electronic component (1) may become unstable and air may leak. There were problems such as inviting

The present invention has been made in view of the above, and an object of the present invention is to provide a suction nozzle for an electronic component mounting machine that can improve the suction force, stabilize the suction posture, and prevent air leakage.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention is characterized in that a groove directed outward from the suction hole is carved on the suction surface of the suction nozzle for vacuum suctioning the electronic component.

[Function] According to the present invention, without reducing the action area of the suction surface,
Since the range of action of air can be expanded, the suction force can be improved, the suction posture can be stabilized, and air leakage can be reliably prevented.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in FIGS. 1 and 2. In the figure, (2) is a suction nozzle of an electronic component mounting machine, and this approximately cylindrical suction nozzle (2) includes a suction hole (3) that allows air to circulate, and a flat suction surface (4) that comes into contact with the top of the electronic component (1).

In addition, the suction surface (4) has a plurality of dead-end grooves (6) oriented radially outward with the suction hole (3) as the center, and these grooves (6) define the area in which the air acts. It has the function to enlarge.

As described above, according to the present invention, the suction surface (4) is provided with a plurality of grooves (6) communicating with the suction holes (3), thereby enlarging the area where air is brought into negative pressure. It is possible to significantly improve the suction power.

Furthermore, as is clear from comparing Figures 1 and 7, it is possible to prevent the area of action of the suction surface (4) from decreasing.
It becomes possible to stabilize the suction posture and prevent air leakage.

Next, FIGS. 3 and 4 show another embodiment of the present invention. In this case, the suction surface (4) has an annular groove located outside the suction hole (3). 7) and a plurality of relay grooves (8) that communicate the annular groove (7) and the suction hole (3).

It is clear that the same effects as those of the above embodiment can be expected from this embodiment as well.

〔Effect of the invention〕

As described above, according to the present invention, the grooves directed outward from the suction holes are carved on the suction surface of the suction nozzle that vacuum-suctions electronic components, thereby preventing a decrease in the active area of the suction surface. It is possible to provide a suction nozzle for an electronic component mounting machine that can expand the range of action of air, thereby improving the suction force, stabilizing the suction posture, and preventing air leakage.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of a suction nozzle of an electronic component mounting machine according to the present invention, FIG. 2 is a longitudinal cross-sectional view of FIG. 1, and FIG.
The figure is an explanatory diagram showing another embodiment of the suction nozzle of the electronic component mounter according to the present invention, FIG. 4 is a longitudinal cross-sectional view of FIG. 3, and FIGS. FIG. 7 is an explanatory diagram showing another example of a suction nozzle for a conventional electronic component mounting machine. In the figure, (1) is an electronic component, (2) is a suction nozzle, and (3) is a suction nozzle.
) is a suction hole, (4) is a suction surface, (6) is a groove, (7) is an annular groove, and (8) is a relay groove. Note that the same reference numerals in the figures indicate the same or corresponding parts. @1 Figure 2 Figure 3 @4 Figure 51Q"ji! Leakage Figure Figure Figure

Claims (1)

[Claims] A suction nozzle for an electronic component mounting machine, characterized in that a suction surface of the suction nozzle for vacuum suctioning an electronic component has a groove oriented outward from a suction hole.