JPH0644158Y2 - Electronic component suction head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial field of the present invention is to individually take out a chip-shaped electronic component from an electronic component supply position and / or to extract the electronic component from the supply position to a predetermined position on a printed circuit board. The present invention relates to a suction head of an electronic component used for mounting on an electronic component.

2. Description of the Related Art Conventionally, in this type of suction head, a plurality of suction nozzles having different tip diameters are provided according to the size of electronic components, and suction is performed with a predetermined diameter each time an electronic component of a different type is taken out or mounted. Nozzles are attached and detached to replace them.

However, this requires a lot of setup time.
Electronic component mounting work cannot be performed efficiently.

In view of the above, an object of the present invention is to provide a suction head for an electronic component that can shorten the setup time required for exchanging the suction nozzle and can efficiently take out or mount the electronic component.

In the suction head for electronic parts according to the present invention, at least two suction nozzles for electronic parts having different tip diameters are provided on the lower end side of the main body cylinder for supplying air pressure. Alternatively, the suction nozzles are radially positioned from a swing center with a predetermined swing angle and aligned and held by a nozzle holder, and the nozzle holder is stretched between the main body cylinder and the suction holder. It is configured to be attached to a lever arm that is swung by a drive cylinder at a predetermined angle against the tension spring that is formed.

Function In this suction head for electronic parts, the suction heads for electronic parts with different tip diameters are selectively installed on the lower end side of the main body cylinder so that they can be connected to the air pressure supply path of the main body cylinder. Necessary items can be replaced in a short time, and each suction nozzle is positioned radially from the swing center to match the swing angle so that the nozzle holder swings and swings over a predetermined angle. Since the suction nozzles are aligned and held in the same direction, not only can each suction nozzle be securely connected to the air pressure supply passage of the main body cylinder with a simple mechanism, but also the drive cylinder can be resisted against the tension spring that connects this nozzle holder to the main body cylinder. The required suction nozzle can be connected to the air pressure supply passage of the main body cylinder in a short time with a simple mechanism by mounting it on a lever arm that swings at a predetermined angle. It

Embodiments The following will be described with reference to the accompanying drawings.

This electronic component suction head can be mounted on an electronic component automatic mounting apparatus as a mechanical unit for picking up electronic components pitch-fed by a carrier tape one by one at predetermined positions and mounting the electronic components at fixed positions on a printed circuit board. Further, as shown in FIG. 1, this suction head is provided with at least two suction nozzles 2, 3 ... Of electronic components having different tip diameters on the lower end side of the main body cylinder 1 for supplying positive and negative air pressures. The main cylinder 1 is configured to be connectable to the air pressure supply passage 1a.

Each suction nozzle 2, 3 ... is a bracket part 4 of the nozzle holder 4.
It is inserted and held in the diameter of each cup portion 4b.4c ... As shown in FIG. 2, the nozzle holder 4 is attached by fixing a bracket portion 4a to one end of a lever arm 7 pivotally attached to a machine body frame 5 supporting the main body cylinder 1 by a support shaft 6. The lever arm 7 is provided with a tension spring 8 which is attached and suspended between the other end side and a machine body frame 5 supporting the main body cylinder 1 via a pivotally attached portion by a support shaft 6 to form one suction nozzle 2
Is tension-supported so as to always be aligned with the air pressure supply passage 1a of the main body cylinder 1. In addition, a drive cylinder 9 mounted on the machine body frame 5 so that the nozzle holder 4 swings and rotates at a predetermined angle against the tension spring 8 is attached to the lever arm 7 near the pivotal portion of the support shaft 6. Are arranged so that the stroke can be moved. The swing angle θ can be set to about 45 degrees by the suction nozzles 2, 3, ... Adjacent to each other, and the suction nozzles 2, 3, ... ing. Further, the respective suction nozzles 2, 3 ... Are radially positioned from the swing center O in accordance with the swing angle so that the suction nozzles 2, 3 ... Can be aligned with the air pressure supply passage 1a of the main body cylinder 1 in accordance with the swing rotation. It is held by the nozzle holder 4 by doing so.

In the suction head configured as described above, when the currently used suction nozzle 2 is replaced with another suction nozzle 3 having a different tip diameter, the drive cylinder is actuated to move the stroke so as to resist the tension spring 8. Support shaft 6
The nozzle holder 4 mounted integrally with the lever arm 7 is pivotally rotated in the direction of 45 ° around. Along with the swing rotation, the axes of the suction nozzles 2, 3, ... Are displaced from the swing center O by a predetermined angle θ. Therefore, instead of the conventional suction nozzle 2, another suction nozzle 3 is used. The cylinder 1 is positioned immediately below so that it can be connected to the air pressure supply passage 1a. When the suction nozzle 3 is located directly below the main body cylinder 1,
As shown in FIGS. 1 and 3, the carrier tape is an electronic component that is pitch-fed below the suction nozzle 3 every time the drive cylinder 10 mounted above the machine body frame 5 extends the stroke to move the main body cylinder 1 downward. From the carrier tape, and immediately after that, the electronic cylinder is taken out from the carrier tape by sucking the electronic component at the tip of the suction nozzle 3 as the drive cylinder 10 moves to reduce the stroke. Further, after this take-out, the machine body frame 5 is sucked onto the plate surface of the printed circuit board mounted on the XY table by the suction nozzles 3.
By moving the electronic component extracted in step 1 to mount it and moving the drive cylinder 10 in a stroke, electronic parts of a different type from before can be continued and mounted on the board surface of the printed circuit board.

In the process, positive and negative air pressures can be alternately switched from an air supply source to the air switching valve 11 as shown in FIG. As the air pressure, a vacuum pressure (-air) is supplied from the switching valve 11 into the diameter of the main body cylinder 1 through the cutout hole 12 when the electronic components are extracted by the suction nozzles 2, 3, ... From the suction nozzles 2 and 3 located directly below the air pressure supply path 1a
One of the suction nozzles 2 and 3 is connected to each other by one of which is connected to each other by displacing upward as the machine body frame 5 moves downward due to the stroke extension of the drive cylinder 10.
Can be sent to ... When the suction nozzles 2, 3, ... Used at this vacuum pressure suck electronic components on the tip of the shaft, the drive cylinder 10 moves in a reduced stroke to cause the suction nozzle to move.
2, 3 ... Ascend while being connected to the main body cylinder 1 to take out the electronic component sucked at the tip of the shaft. When the drive cylinder 10 stops its stroke motion, the screw shaft 13 screwed into the rear side of the machine body frame 5 is rotated, and the machine body frame 5 is laterally moved along the guide rail 15 which is supported by rollers 14a to 14d in a pressure-sensitive manner. By moving to, the suction head moves to the mounting position of the electronic component on the printed circuit board. At this mounting position, the drive cylinder 10 strokes to move the suction nozzles 2, 3 ... to the board surface position of the printed circuit board, and the suction head body cylinder 1
By supplying compressed air (+ air) to the suction nozzles 2, 3, ... From this position, electronic components can be mounted on the board surface of the printed circuit board. After mounting the electronic component, the suction head is immediately moved upward by the drive cylinder 10 and returned to the original position, whereby the electronic component is continuously mounted on the printed circuit board by the same operation.

In addition, in the above-mentioned embodiment, the case where two suction nozzles 2 and 3 are equipped is illustrated, but the suction nozzle can be equipped with two or more, and in this case, the swing angle of each suction nozzle. It is only necessary to set θ to be small and to radially install. Further, as the suction head, the case where the electronic components are taken out and mounted in series has been exemplified, but the suction head may be equipped as an electronic component extraction head and a mounting head that individually perform this.

Effects of the Invention As described above, according to the suction head of the electronic component of the present invention, at least two suction nozzles are provided on the lower end side of the main body cylinder, so that the suction nozzle required depending on the type of electronic component can be shortened. Not only can it be replaced, but the replacement can be performed accurately with a simple mechanism.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a suction head of an electronic component according to the present invention, FIG. 2 is a partially enlarged front view showing a part of a suction nozzle equipped with the same head, and FIG. It is a side view partially shown in section. 1: Main body cylinder, 1a: Air pressure supply path, 2, 3 ...: Adsorption nozzle, 4: Nozzle holder, 7: Lever arm, 8: Tension spring, 9: Drive cylinder, O: Oscillation center of adsorption nozzle, θ : Swing angle of the suction nozzle.

Claims (1)

[Scope of utility model registration request] 1. An air pressure supply path (1a) for a main body cylinder (1) is provided with at least two suction nozzles (2, 3 ...) Of electronic parts having different tip diameters on the lower end side of the main body cylinder (1) for supplying air pressure. ) And the suction nozzles (2, 3 ...) are positioned radially from the swing center (O) with a predetermined swing angle (θ) and aligned with the nozzle holder (4). A lever arm (7) that holds the nozzle holder (4) and swings the nozzle holder (4) by a predetermined angle by a drive cylinder (9) against a tension spring (8) stretched between the nozzle holder (4) and the main body cylinder (1). A suction head for electronic parts that is mounted.